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Asynchroniczna
architektura w praktyce
(na przykładzie BlaBlaCar)
Mirosław Karczmarczyk
Tytułem wstępu
Tytułem wstępu
Connecting people
BlaBlaCar w liczbach
30mln użytkowników
20 Instancji Frontu
87Programistów i architektow
11Nodów bazy danych
200 Serwerów
Mobilnych
użytkowników18mln
Co się dzieje po rezerwacji miejsca?
Czas
Wysyłamy maila do rezerwującego
Wysyłamy SMS’a do kierowcy
Indeksujemy
Zapisujemy w bazie
Zbieramy statystyki
Odpowiedź
Efekt ?
A gdyby tak…
Czas
Wysyłamy SMS’a do kierowcy
Wysyłamy maila
Indeksujemy
Zapisujemy w bazie
Zbieramy statystyki
Klik…
Asynchroniczność…
Mikroserwisy!!!
• łatwość wdrożenia zmian
• niezależność
• osobne repozytoria
• skalowalność
Cechy mikroserwisu
Skalowalność aplikacji
Komunikacja pomiędzy mikroserwisami
Synchroniczna Asynchroniczna
Kolejkowanie wiadomości
Publisher - Subscriber
REST API
MAILERSerwis A MAILERSerwis B
Workery
FRONTFront
Load balancer
Monitoring / LogiBaza Danych IndekserCache
API
Load balancer
Serwer kolejkowania wiadomości
Konsumer
Konsumer
KolejkaPublisher Konsumer
Fanout Exchange
konsumer A
konsumer A
konsumer B
konsumer C
ExchangePublisher
Kolejka 1
Kolejka 2
Kolejka 3
Fanout Exchange
Routing keys
Publisher
konsumer A
konsumer A
konsumer B
konsumer C
Exchange
Kolejka 1
Kolejka 2
Kolejka 3
route_1
route_2
route_3
route_1
route_2
Routing keys
Konsumer / worker
Konsumer / worker c.d.
Konsumer / worker c.d.
Pimple - Dependency Injection
Pimple - Dependency Injection c.d.
Pimple - Dependency Injection c.d.
Symfony 2 - RabbitMQBundle
Symfony 2 - RabbitMQBundle c.d.
Symfony 2 - RabbitMQBundle c.d.
Symfony 2 - RabbitMQBundle c.d.
$ ./app/console rabbitmq:consumer -m 50 -w testConsumer
A co jeśli…
…masz 100 (1000 instancji) workerów?
… przetwarzasz 2500 do 7500 wiadomości
na sekundę w Rabbicie?
Długo działające procesy!!!
Swarrot - consume them all!!
Swarrot - consume them all!!
Swarrot - consume them all!!
Potrzebujemy czegoś więcej…
Swarrot - consume them all!!
Swarrot - consume them all!!
Enkapsulacja
Swarrot - consume them all!!
Swarrot - consume them all!!
Stack technologiczny BlaBlaCar
BlaBlaCar.com/dreamjobs
@BlaBlaCarTech
Backend Engineers
Frontend Engineers
iOS Engineers
Android Engineers
WARSZAWA PARYŻ
Źródła:
• http://queues.io/
• https://www.rabbitmq.com
Przydatne pakiety:
• swarrot/swarrot
• pimple/pimple
• silex/silex
• php-amqplib/RabbitMqBundle
Podziękowania dla Olivier’a Dolbeau :)
[PL] Komunikacja Asynchroniczna

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