Video and slides synchronized, mp3 and slide download available at http://bit.ly/13eMkRc. Mike Hadlow explains why RabbitMQ makes a compelling solution for building scalable systems, overviewing its exchange-binding-queue routing topology and showing how to build messaging patterns with it.Filmed at qconlondon.com. Mike Hadlow works as a freelance .NET developer and architect. For the last few years he's been especially interested in messaging systems and service oriented architectures. He writes a blog, 'Code Rant', and is the author of several open source projects including Suteki Shop, an eCommerce framework, and EasyNetQ, a simple API for RabbitMQ. He lives in Lewes on the south coast of the UK.

1. RabbitMQ and .NET
With EasyNetQ

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4. Mike Hadlow
Freelance software guy based in Brighton.
Currently working with airline industry experts,
15below (15below.com)
http://mikehadlow.blogspot.com
@mikehadlow

5. Today's Talk
● EasyNetQ demo
● Why messaging?
● Why RabbitMQ?
● AMQP Exchange-Binding-Queue Model
● Why EasyNetQ?
● Our experience with RabbitMQ

6. EasyNetQ Demo
Just for fun it's using Mono on OSX

7. Why Messaging?
logically
Decoupled
Location
Unaware
Temporal
Decoupling
Low
Latency
Open
Standards
File
Transfer
yes yes yes no yes
Shared
Database
no yes yes no no
RPC
(e.g. COM+)
yes no no yes no
Web Services yes no no yes yes
Message
Queue
yes no yes yes some
Message Bus yes yes yes yes some

8. Why RabbitMQ
Broker vs Brokerless
● Location unaware
services
● Single point of
management
(monitoring, DR)
● Every interaction has
two hops
● Location aware
● No single point of
failure
● Each interaction has a
single hop
● Monitoring, DR is
distributed

9. Why RabbitMQ
● VMWare
○ Open source
○ Commercial support available
● Erlang
○ Reliable Actor based programming
○ Fault tollerant
○ Multi-platform
○ Clustering out-of-the-box
● AMQP
○ Open standard
○ Client libraries for different languages
○ Flexible exchange-binging-queue model

10. AMQP
P X
Q1
Q2
C2
C1
C3
"a.b"
a.*
a.b

11. Why EasyNetQ?
● 15below
● Inspired by NServiceBus, MassTransit
● AMQP is not easy
○ Implement messaging patterns
○ Serialization
○ Threading strategy (producer and consumer)
○ Handling connection loss
○ Various AMQP tweaks (QoS settings etc)
○ Error handling strategy
● Attempts to make messaging with RabbitMQ
super easy

12. EasyNetQ
● Open Source MIT licence
● EasyNetQ.com
● http://github.com/mikehadlow/EasyNetQ
● 15 contributors, 58 forks
● Full documentation wiki
● Active newsgroup
● NuGet 8000+ downloads - CI from GitHub
● Supports a multi-million £ business
● Sponsored by 15below
● RabbitMQ Management API client

13. Our Experiences With RabbitMQ
● RabbitMQ is a reliable black box
● Performance is great
● Management UI is useful
● Writing reliable AMQP clients is hard
● Monitoring a challenge
● Auditing a challenge
● Message versioning?

14. So ...
● Messaging can help you build SOA
● RabbitMQ is a robust high-performance
message broker
● EasyNetQ makes working with RabbitMQ
from .NET easy.
One more thing...
15below is hiring - so come and do messaging
with us in Brighton!

15. Questions?
RabbitMQ.com
EasyNetQ.com
Mike Hadlow
http://mikehadlow.blogspot.com
@mikehadlow