Serve like a boss (part one)
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Some concepts and an introduction to [web] server configuration. * SPOF * Round-Robin Scheduling * Caching * Bottlenecks * Operating Systems tips
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Redis is an open-source, in-memory data structure store that can act as a database, cache, and message broker. It supports many different data types like strings, hashes, lists, sets, sorted sets, bitmaps, and hyperloglogs. Redis provides fast performance, replication, clustering, transactions, pub/sub capabilities and scripting through Lua. While data is stored in-memory for speed, Redis can be configured to periodically persist data to disk for durability.
Training Slides: 103 - Basics - Simple Tungsten Clustering Installation
This 52min training session summarises what you need to know with regards to Tungsten Clustering architecture and topologies; and then dives into its installation process.
TOPICS COVERED
- Re-cap of the Architecture And Topology
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- Documentation
- Software
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- Review Installation Types And Methods
- Walk Through: Simple 3 Node Cluster Installation
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Using linux to manage the entire rack
Top-of-rack switches managed with the same tools as servers
With Cumulus Linux, top-of-rack switches can be managed with the same Linux tools as the servers. But until now, the out-of-band management switch was still separate, limited to traditional network switches and their unique tools.
With the new Cumulus RMP (Rack Management Platform) operating system for out-of-band switches, Linux can now be used to manage the entire rack. That means the tools you use for servers and for switches running Cumulus Linux can also be used for the out-of-band switch starting with the Penguin Computing Arctica 4804ip.
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Redis in 20 minutes
Redis is an open-source, in-memory data structure store that can act as a database, cache, and message broker. It supports many different data types like strings, hashes, lists, sets, sorted sets, bitmaps, and hyperloglogs. Redis provides fast performance, replication, clustering, transactions, pub/sub capabilities and scripting through Lua. While data is stored in-memory for speed, Redis can be configured to periodically persist data to disk for durability.
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This 52min training session summarises what you need to know with regards to Tungsten Clustering architecture and topologies; and then dives into its installation process.
TOPICS COVERED
- Re-cap of the Architecture And Topology
- Plan The Installation
- Documentation
- Software
- Environmental Decisions
- Review Pre-Requisites
- Review Installation Types And Methods
- Walk Through: Simple 3 Node Cluster Installation
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This document provides an overview of Bower, a package manager for the web. It discusses the requirements to use Bower, how to install and configure it, and how to run Bower to install dependencies. Bower is used to manage front-end components and their dependencies. It requires Node.js and NPM to be installed first. Then Bower can be installed globally and configured via a bower.json file to specify packages and dependencies. Running Bower will install all dependencies to the default or specified directory. The document also briefly explains how Bower can be used with XPages projects to manage front-end libraries.
iMobileMagic Teck Talk Scale Up
There are two main types of scaling: vertical scaling involves upgrading hardware on a single server, while horizontal scaling involves adding more servers. Before scaling, strategies like caching and optimizing queries can improve performance. When scaling databases, options include sharding data across multiple servers and using master-slave replication. Server scaling with microservices breaks applications into independent, communicating components. General tips for scaling include monitoring resources, auto-scaling with metrics, and killing instances to reduce costs when possible.
Beyond Apache: Faster Web Servers
Siddharth Vijayakrishnan discusses how web servers work and compares Apache to other web servers like Lighttpd. He explains that while Apache is popular, its multi-process model does not scale well under heavy loads. Lighttpd uses an event-driven model and single process design that allows it to outperform Apache in benchmarks. It has gained popularity as a faster alternative to Apache for serving dynamic content. The document also outlines future areas of improvement for Lighttpd.
Docker Overview
This document provides an overview of Docker, explaining that Docker is an engine that sits between the OS and containers to enable rapid application deployment. It describes Docker components like images, containers, and repositories. Images are templates used to deploy containers, with images built from Dockerfiles that define layers. The document highlights that containers are stateless, and various strategies for handling configuration files. It also notes drawbacks like containers being read-only, and tips like using base images and keeping the firewall on.
Optimization_of_Virtual_Machines_for_High_Performance
Practical information on how to Optimize Virtual Machines for High Performance by Boyan Krosnov, Chief Product Officer at StorPool Storage
Presentation delivered at OpenNebula TechDay Sofia on 25-th of February 2016
Using linux to manage the entire rack
Top-of-rack switches managed with the same tools as servers
With Cumulus Linux, top-of-rack switches can be managed with the same Linux tools as the servers. But until now, the out-of-band management switch was still separate, limited to traditional network switches and their unique tools.
With the new Cumulus RMP (Rack Management Platform) operating system for out-of-band switches, Linux can now be used to manage the entire rack. That means the tools you use for servers and for switches running Cumulus Linux can also be used for the out-of-band switch starting with the Penguin Computing Arctica 4804ip.
This presentation helps you to learn more about using Linux to manage the whole rack, including details on:
Open development
Consistent interface
Access to local network data for operations
Integrated tools
Ease of automation
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http://fosdem.org/2011/schedule/event/mysql_new_in_5_5
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2) Increased networking capabilities such as creating port groups and configuring VLAN IDs dynamically.
3) Significant speed improvements through caching and other optimizations, providing access to vCenter objects up to 100x faster.
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Membase is a key-value store that is API-compatible with memcached. It provides persistence by replicating data across multiple nodes. The cluster structure allows elastic scaling, replication for high availability, and rebalancing of data partitions without downtime. Membase was developed by NorthScale and Zynga and is used in production for applications like Farmville.
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Storage buyers today are faced with a broader variety of choices than ever before. Unfortunately, the architecture of the storage system they select will forever determine how well that system adapts to changes in their data center. While flash does make almost every storage system faster, the system's scalability, flexibility and manageability are determined not by the media but by the system's architecture.
This session will examine how storage system architectures predetermine how systems behave in the real world. We'll see how common storage architectures affect performance, scalability, quality of service, snapshots and vVol support.
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Contenu connexe
Tendances
NFD9 - David Sinn, Real World Examples
For all of us with a network administrator background, David Sinn, Customer Solution Engineer at Cumulus Networks takes us on his journey from network admin to cloud admin and provides customer examples. In particular, you’ll hear some lively discussion around Linux bash configuration versus the CLI, with many applauding ifupdown2 for operational simplicity.
What's new in MySQL 5.5? FOSDEM 2011
Slides of my MySQL & Friends DevRoom talk at FOSDEM 2011 in Brussels on 2011-02-05
http://fosdem.org/2011/schedule/event/mysql_new_in_5_5
Secure your IT infrastructure with GNU/Linux
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Docker Presentation from Spiceworks All Access
Docker allows for rapid application deployment through the use of containers created from images. Containers are built in layers through a Dockerfile and deployed from images. Containers are lightweight and portable, getting deployed easily through the Docker run command, but are considered stateless and temporary since stopping a container deletes data. Images contain the files, configuration, and dependencies for an application and can be pulled from repositories, providing an easy way to deploy applications.
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This document summarizes new features in OpenNebula 5.4, including improvements to its integration with vCenter. Some key highlights are:
1) Enhancements to storage functionality like persistent/non-persistent images, disk resizing, and improved Storage DRS support.
2) Increased networking capabilities such as creating port groups and configuring VLAN IDs dynamically.
3) Significant speed improvements through caching and other optimizations, providing access to vCenter objects up to 100x faster.
4) Additional fixes that resolve prior limitations like attach/detach poweroff state and proper cleanup of terminated VMs.
Velocity - NxtGen Oxford
Velocity is a distributed cache that allows sharing of cached data across multiple servers. In version 1, it is best suited for session state caching due to limitations in handling dependencies between cached objects. Future versions will expand its capabilities to support full output caching and read-write operations. Currently, Velocity provides a basic set of cache operations and management functionality through its client and server configuration.
IT PRO|DEV CONNECTIONS 2013 - The X-Files of SQL Server
This document provides a biography and summary of topics to be covered by speaker Antonios Chatzipavlis at an upcoming SQL Server conference in Athens, Greece on December 7-8, 2013. Antonios is a SQL Server expert and evangelist who has over 30 years of experience working with computers and SQL Server. The presentation will cover new features in SQL Server 2014 including In-Memory OLTP, AlwaysOn enhancements, columnstore indexes, and more. It will also discuss topics like buffer pool extension, backup and restore enhancements, using SQL Server with Windows Azure, and security improvements.
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SQLite is an open source, public domain embedded SQL database that is zero-configuration, self-contained, and supports transactions that remain intact after system crashes or power failures. It implements most of SQL92 and stores the entire database in a single disk file, supporting databases up to terabytes in size. SQLite is faster than popular client/server databases for most common operations and has a simple API with bindings available for dozens of languages.
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In this keynote from Deltaware Data Solutions' 2016 Emerging Technology Summit, Stephen Foskett gives essential background on the emerging trend of containerization of enterprise applications. What are containers and how will they affect enterprise IT? Why is Docker so important? Foskett addresses both the technical and architectural questions, discussing which applications will be containerized, the benefits and costs, and what it means for IT operations.
[Mas 500] Various Topics
This document discusses various topics related to software modules including homework, servers, command line interfaces (CLI), security, and client/server products. It provides examples of different types of servers and operating systems that can be used. It also summarizes CLI commands, permissions, and how to schedule tasks using cron. The document outlines best practices for security including key-based login, avoiding committing passwords to code, and conducting security audits. It also provides an example of how realtime signage products could be developed using asynchronous and synchronous client-server architectures and deployed in development, staging, and production environments.
Roll your own FOSS cloud hosting
If you're a web developer or a site owner and you've been thinking of breaking out of shared hosting, maybe you've been looking at cloud hosting. This presentation outlines the pros and cons of shared hosting vs cloud hosting, and how to build a roll-your-own cloud host, complete with a clean, fast, free open source control panel. The talk was delivered to the Melbourne Joomla! User Group on 25 March 2015.
Setting up a local WordPress Environment
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Everyone has their own method for building and hosting their WordPress site. One easy solution is building it locally then exporting it to your live server. Chris is going to show you a great solution for both Mac and PC, that lets you work locally and helps get your site up and running quickly and simply.
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Membase is a key-value store that is API-compatible with memcached. It provides persistence by replicating data across multiple nodes. The cluster structure allows elastic scaling, replication for high availability, and rebalancing of data partitions without downtime. Membase was developed by NorthScale and Zynga and is used in production for applications like Farmville.
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This document summarizes new features related to live migration in Windows Server 2012. It discusses parallel live migration, live migration queuing, considering VM priority during migration, more effective network usage during migration, and the ability to saturate a 10GbE link. It also discusses the different types of live migration scenarios and requirements for enabling live migration between hosts or clusters. It provides details on the process of live storage migration and requirements for delegating authentication for live migration. Finally, it discusses VM priority values and notes that live migration does not support pass-through disks.
Hyper-v for Windows Server 2012 Live Migration
Live migration allows virtual machines (VMs) to be moved between host servers without being powered off, providing very short downtimes on the order of milliseconds. This is done using shared storage, such as iSCSI or SMB 3.0, accessed by both hosts. It allows VMs to be migrated without interrupting applications. Quick migration in earlier versions required powering down VMs during migration, taking seconds. Live migration enables load balancing and maintenance with minimal impact on users.
Mini-Training: NancyFX
NancyFX is an open-source framework for building HTTP-based services on .NET and Mono. It prioritizes conventions over configurations and provides an easy domain-specific language. Key features include routing, model binding, integrated view engines, and testing capabilities. Modules define application behavior and are globally discovered by the bootstrapper, which aggregates all framework pieces.
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TechTarget Event - Storage Architectures for the Modern Data Center - Howard ...
Keynote Presentation: How Storage Function Follows Architecture
Presented by Howard Marks, Founder and Chief Scientist, Deep Storage, LLC
Storage buyers today are faced with a broader variety of choices than ever before. Unfortunately, the architecture of the storage system they select will forever determine how well that system adapts to changes in their data center. While flash does make almost every storage system faster, the system's scalability, flexibility and manageability are determined not by the media but by the system's architecture.
This session will examine how storage system architectures predetermine how systems behave in the real world. We'll see how common storage architectures affect performance, scalability, quality of service, snapshots and vVol support.
Server operating system file
This document discusses server operating systems. It defines a server as a computer that provides data to other computers on a network. It explains that server operating systems are specially designed to support networking and allow for shared files, data, and resources on a local or private network. Some examples of popular server operating systems mentioned are Windows Server 2012, OS X Server, UNIX, Linux, Solaris, and Netware. The document provides brief descriptions of these server operating systems and their advantages and disadvantages. It emphasizes that a server operating system allows for centralized management of users, groups, security, applications and other network functions.
Tendances (20)
IT PRO|DEV CONNECTIONS 2013 - The X-Files of SQL Server
IT PRO|DEV CONNECTIONS 2013 - The X-Files of SQL Server
TechEvent 2019: Oracle Database Appliance M/L - Erfahrungen und Erfolgsmethod...
TechEvent 2019: Oracle Database Appliance M/L - Erfahrungen und Erfolgsmethod...
TechTarget Event - Storage Architectures for the Modern Data Center - Howard ...
TechTarget Event - Storage Architectures for the Modern Data Center - Howard ...
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This document discusses modeling and predicting performance for Ceph storage clusters. It describes many of the hardware, software, and configuration factors that impact Ceph performance, including network setup, storage nodes, disks, redundancy, placement groups and more. The document advocates for developing standardized benchmarks to better understand Ceph performance under different workloads and cluster configurations in order to answer customers' questions.
NGENSTOR_ODA_P2V_V5
This document discusses migrating an Oracle Database Appliance (ODA) from a bare metal to a virtualized platform. It outlines the initial situation, desired target, challenges, and solution approach. The key challenges included system downtime during the migration, backup/restore processes, using external storage, and database reorganizations. The solution involved first converting to a virtual platform and then upgrading, using backup/restore, attaching an NGENSTOR Hurricane storage appliance for direct attached storage, and moving database reorganizations to a separate maintenance window. It also discusses the odaback-API tool created to help automate and standardize the migration process.
Disaggregated Container Attached Storage - Yet Another Topology with What Pur...
The storage topology in vogue seems to cycle every few years. Internal storage is followed by centralized Storage Area Networks only to be superseded by one-size-fits-all Hyperconverged models - until scalability constraints led to distributed storage. Then comes NVMe, offering blistering speeds that all of these storage stacks struggle with. Kubernetes inspires Container Attached Storage aspiring to be the perfect model, so why is disaggregated storage now making an appearance?
This talk considers the motivations behind yet another storage topology and examines a modern, flexible architecture for delivering high-performance storage under Kubernetes.
This talk was given by Nick Connolly for DoK Day Europe @ KubeCon 2022.
Disaggregated Container Attached Storage - Yet Another Topology with What Pur...
Link: https://youtu.be/YhktX1W0geM
https://go.dok.community/slack
https://dok.community/
From the DoK Day EU 2022 (https://youtu.be/Xi-h4XNd5tE)
The storage topology in vogue seems to cycle every few years. Internal storage is followed by centralized Storage Area Networks only to be superseded by one-size-fits-all Hyperconverged models - until scalability constraints led to distributed storage. Then comes NVMe, offering blistering speeds that all of these storage stacks struggle with. Kubernetes inspires Container Attached Storage aspiring to be the perfect model, so why is disaggregated storage now making an appearance?
This talk considers the motivations behind yet another storage topology and examines a modern, flexible architecture for delivering high-performance storage under Kubernetes.
-----
Nick Connolly is a pioneer of storage virtualisation and the Chief Scientist at DataCore, where his background in real-time computing and multiprocessing led to the creation of a world-class high-performance storage stack on Windows. He holds patents ranging from highly scalable algorithms through to data protection techniques. Recently he has been working with OpenEBS to bring the power and performance of NVMe to Kubernetes.
Developing a Ceph Appliance for Secure Environments
Keeper Technology develops a Ceph appliance called keeperSAFE for secure storage environments. The keeperSAFE appliance provides a preconfigured Linux distribution, automated installation using Ansible, enclosure management tools, a graphical user interface for monitoring and configuration, data collection and analytics, encryption capabilities, and extensive testing. It is designed for environments that require high availability, no single points of failure, easy management, and auditability. The keeperSAFE appliance addresses the challenges of deploying and managing Ceph at scale in restricted, mission critical environments.
OSDC 2016 - Tuning Linux for your Database by Colin Charles
Many operations folk know that performance varies depending on using one of the many Linux filesystems like EXT4 or XFS. They also know of the schedulers available, they see the OOM killer coming and more. However, appropriate configuration is necessary when you're running your databases at scale.
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Learn from practical examples from the trenches.
Teradata introduction - A basic introduction for Taradate system Architecture
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- Node architecture
- SQL Request Processing
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Tuning Linux for your database FLOSSUK 2016
Some best practices about tuning Linux for your database workloads. The focus is not just on MySQL or MariaDB Server but also on understanding the OS from hardware/cloud, I/O, filesystems, memory, CPU, network, and resources.
DBAM-01.pdf
The document provides information about database administration including:
1. It discusses different database management system (DBMS) architectures like enterprise, departmental, personal, mobile, and cloud.
2. It describes factors to consider when choosing a DBMS like operating system support, organization type, benchmarks, scalability, tools availability, technicians availability, and cost of ownership.
3. It outlines the Oracle database installation process including hardware and software requirements, available installation options, and tools for database administration.
Database Administration & Management - 01
The document provides information about database administration including:
1. It discusses different database management system (DBMS) architectures like enterprise, departmental, personal, mobile, and cloud.
2. It describes factors to consider when choosing a DBMS like operating system support, organization type, benchmarks, scalability, tools availability, technicians availability, and cost of ownership.
3. It outlines the Oracle database installation process including hardware and software requirements, available installation options, and tools for database administration.
Pascal benois performance_troubleshooting-spsbe18
Where to start? - the first 2 hours of performance troubleshooting
• The performance cheat sheet: cover all the basics before you start
• Data collections and mining the logs
• Common techniques to improve performance
Drupal performance
This document discusses various techniques for optimizing Drupal performance, including:
- Defining goals such as faster page loads or handling more traffic
- Applying patches and rearchitecting content to optimize at a code level
- Using tools like Apache Benchmark and MySQL tuning to analyze performance bottlenecks
- Implementing solutions like caching, memcached, and reverse proxies to improve scalability
Running MySQL on Linux
The document discusses best practices for running MySQL on Linux, covering choices for Linux distributions, hardware recommendations including using solid state drives, OS configuration such as tuning the filesystem and IO scheduler, and MySQL installation and configuration options. It provides guidance on topics like virtualization, networking, and MySQL variants to help ensure successful and high performance deployment of MySQL on Linux.
Midwest PHP - Scaling Magento
Mathew Beane discusses strategies for optimizing and scaling Magento applications on clustered infrastructure. Some key points include:
- Using Puppetmaster to build out clusters with standard webnodes and database configurations.
- Magento supports huge stores and is very flexible and scalable. Redis is preferred over Memcache for caching.
- Important to have application optimization, testing protocols and deployment pipelines in place before scaling.
- Common components for scaling include load balancers, proxying web traffic, clustering Redis with Sentinel and Twemproxy, adding read servers and auto-scaling.
Cloud computing UNIT 2.1 presentation in
Cloud storage allows users to store files online through cloud storage providers like Apple iCloud, Dropbox, Google Drive, Amazon Cloud Drive, and Microsoft SkyDrive. These providers offer various amounts of free storage and options to purchase additional storage. They allow files to be securely uploaded, accessed, and synced across devices. The best cloud storage provider depends on individual needs and preferences regarding storage space requirements and features offered.
Ashnik EnterpriseDB PostgreSQL - A real alternative to Oracle
A Technical introduction to PostgreSQL and Postgres Plus -
Enterprise Class PostgreSQL Database from EDB - You have a ‘Real’ alternative to Oracle and other conventional proprietary Databases
RavenDB embedded at massive scales
1) RDI uses RavenDB embedded in over 36,000 restaurants with around 500,000 individual machines processing $50,000 per second in payments.
2) RavenDB allows for unit testing without mocking the database, advanced statistics on data persistence, and transparent replication with high availability.
3) The challenges of using RavenDB on specialized older hardware with low memory and ESENT include fine-tuning memory usage, disabling caching, and automating recovery from unclean shutdowns with ESENTUTL.EXE.
REDIS (Remote Dictionary Server)
Redis is an open source, in-memory data structure store that can be used as a database, cache, message broker, and queue. It supports key-value and document-style databases, and provides data structures like strings, hashes, lists, sets, sorted sets with range queries and hyperloglogs for cardinality estimation. Redis has fast performance since it stores data in memory, supports master-slave replication for fault tolerance, and can replicate data to multiple slaves. While it does not support SQL-style joins, Redis is simple to install, configure and manage.
Similaire à Serve like a boss (part one) (20)
Modeling, estimating, and predicting Ceph (Linux Foundation - Vault 2015)
Modeling, estimating, and predicting Ceph (Linux Foundation - Vault 2015)
Disaggregated Container Attached Storage - Yet Another Topology with What Pur...
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Disaggregated Container Attached Storage - Yet Another Topology with What Pur...
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Developing a Ceph Appliance for Secure Environments
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OSDC 2016 - Tuning Linux for your Database by Colin Charles
OSDC 2016 - Tuning Linux for your Database by Colin Charles
Teradata introduction - A basic introduction for Taradate system Architecture
Teradata introduction - A basic introduction for Taradate system Architecture
VMworld Europe 2014: Advanced SQL Server on vSphere Techniques and Best Pract...
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Ashnik EnterpriseDB PostgreSQL - A real alternative to Oracle
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Charla impartida en el evento de "KuberTENes Birthday Bash Guadalajara" para celebrar el 10mo. aniversario de Kubernetes #kuberTENes #celebr8k8s #k8s
socradar-q1-2024-aviation-industry-report.pdf
SOCRadar's Aviation Industry Q1 Incident Report is out now!
The aviation industry has always been a prime target for cybercriminals due to its critical infrastructure and high stakes. In the first quarter of 2024, the sector faced an alarming surge in cybersecurity threats, revealing its vulnerabilities and the relentless sophistication of cyber attackers.
SOCRadar’s Aviation Industry, Quarterly Incident Report, provides an in-depth analysis of these threats, detected and examined through our extensive monitoring of hacker forums, Telegram channels, and dark web platforms.
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
Crescat is industry-trusted event management software, built by event professionals for event professionals. Founded in 2017, we have three key products tailored for the live event industry.
Crescat Event for concert promoters and event agencies. Crescat Venue for music venues, conference centers, wedding venues, concert halls and more. And Crescat Festival for festivals, conferences and complex events.
With a wide range of popular features such as event scheduling, shift management, volunteer and crew coordination, artist booking and much more, Crescat is designed for customisation and ease-of-use.
Over 125,000 events have been planned in Crescat and with hundreds of customers of all shapes and sizes, from boutique event agencies through to international concert promoters, Crescat is rigged for success. What's more, we highly value feedback from our users and we are constantly improving our software with updates, new features and improvements.
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Webinar On-Demand: Using Flutter for Embedded
Flutter is a popular open source, cross-platform framework developed by Google. In this webinar we'll explore Flutter and its architecture, delve into the Flutter Embedder and Flutter’s Dart language, discover how to leverage Flutter for embedded device development, learn about Automotive Grade Linux (AGL) and its consortium and understand the rationale behind AGL's choice of Flutter for next-gen IVI systems. Don’t miss this opportunity to discover whether Flutter is right for your project.
DDS-Security 1.2 - What's New? Stronger security for long-running systems
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Essentials of Automations: The Art of Triggers and Actions in FME
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We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
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What is Master Data Management by PiLog Group
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SWEBOK and Education at FUSE Okinawa 2024
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Artificia Intellicence and XPath Extension Functions
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Empowering Growth with Best Software Development Company in Noida - Deuglo
Do you want Software for your Business? Visit Deuglo
Deuglo has top Software Developers in India. They are experts in software development and help design and create custom Software solutions.
Deuglo follows seven steps methods for delivering their services to their customers. They called it the Software development life cycle process (SDLC).
Requirement — Collecting the Requirements is the first Phase in the SSLC process.
Feasibility Study — after completing the requirement process they move to the design phase.
Design — in this phase, they start designing the software.
Coding — when designing is completed, the developers start coding for the software.
Testing — in this phase when the coding of the software is done the testing team will start testing.
Installation — after completion of testing, the application opens to the live server and launches!
Maintenance — after completing the software development, customers start using the software.
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We will focus in particular on tuning your engine at the application level, making the right adjustments to ensure that your system responds like a well-oiled, high-performance race car.
E-commerce Application Development Company.pdf
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OpenMetadata Community Meeting - 5th June 2024
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* How to run your own data quality framework
* What is the performance impact of running data quality frameworks
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An update on making Xen hypervisor functionally safe and enhancing its usage in automotive and industrial use cases
Graspan: A Big Data System for Big Code Analysis
We built a disk-based parallel graph system, Graspan, that uses a novel edge-pair centric computation model to compute dynamic transitive closures on very large program graphs.
We implement context-sensitive pointer/alias and dataflow analyses on Graspan. An evaluation of these analyses on large codebases such as Linux shows that their Graspan implementations scale to millions of lines of code and are much simpler than their original implementations.
These analyses were used to augment the existing checkers; these augmented checkers found 132 new NULL pointer bugs and 1308 unnecessary NULL tests in Linux 4.4.0-rc5, PostgreSQL 8.3.9, and Apache httpd 2.2.18.
- Accepted in ASPLOS ‘17, Xi’an, China.
- Featured in the tutorial, Systemized Program Analyses: A Big Data Perspective on Static Analysis Scalability, ASPLOS ‘17.
- Invited for presentation at SoCal PLS ‘16.
- Invited for poster presentation at PLDI SRC ‘16.
GreenCode-A-VSCode-Plugin--Dario-Jurisic
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原版一模一样【微信：741003700 】【美国纽约州立大学奥尔巴尼分校毕业证学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Fundamentals of Programming and Language Processors
Fundamentals of Programming and Language Processors
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Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
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DDS-Security 1.2 - What's New? Stronger security for long-running systems
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Essentials of Automations: The Art of Triggers and Actions in FME
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Empowering Growth with Best Software Development Company in Noida - Deuglo
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Using Query Store in Azure PostgreSQL to Understand Query Performance
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Fundamentals of Programming and Language Processors
Serve like a boss (part one)
- 1. SERVE LIKE A BOSS (PART ONE) SOME CONCEPTS AND AN INTRODUCTION TO SERVER CONFIGURATION 27 Aug 2015 Hamed Nemati
- 2. SPOF (SINGLE POINT OF FAILURE) • Hardware/Software interface • It’s failure will cause whole system fail
- 3. ROUND-ROBIN SCHEDULING • No priority • Simple • Starvation-free Usage: • Process and network scheduler • data packet scheduling “Each person takes an equal share of something in turn”
- 4. CACHE EVERYWHERE! When: • Response time counts • Accessing multiple times (Heavy reads, light writes) “Ram is the new disk”
- 5. CACHE EVERYWHERE! Cache hit occurs when the requested data can be found in a cache, while a cache miss occurs when it cannot.
- 6. BOTTLENECK A bottleneck occurs when the capacity of an application or a computer system is severely limited by a single component. • Processor • Communication link • Disk IO
- 7. DATABASE CACHING • Performance • Availability: by continued service for applications that depend only on cached tables even if the backend server is unavailable. • Scalability • Flexibility
- 8. TWO CACHING SOFTWARE • Key / Value • Up to 512MiB per Key • Support data types • Not only a cache mechanism • Can perform persistence • Simple Key / Value [String] • Up to 1MiB per Key • Faster than Redis • Non-persistence Use case: User sessions caching Use case: Database caching
- 9. A SIMPLE REAL LIFE WEB ARCHITECTURE User Request Web Server Web App Database Cache ( Memcached ) Database ( MySql ) Server Sessions Cache (Redis)
- 10. CONFIGURING A WEB SERVER
- 11. OPERATING SYSTEM • Use Ubuntu when you have more ram (otherwise CentOS fit better) • Use 32bit when you have less ram • Most of the time newer versions of the OS require more initial ram • Always try to install packages from OS repositories: • Easy to update • More stable and reliable • More compatible with other apps
- 12. OPERATING SYSTEM CHALLENGES • Configuring different distributions are different • Configuring a 32bit OS may differ by it’s 64bit version • Configuring different versions of a same distribution may differ
- 13. OPERATING SYSTEM CHALLENGES Challenge: Distribution support has finished and packages are not maintained any more, so you can not find a package or the package is out dated Solution: Use an external repository to get the latest [or your preferred] version of the package (Like Remi and EPEL for CentOS).
- 14. - Dedicated to my friends in NIGS TO BE CONTINUED…
- 15. HAMED NEMATI • hamed@atbox.io • @hamednz • New Idea Game Studio