Queues & Async Apps - Speaker Deck

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QUEUES & ASYNC APPS MACEIÓ DEV MEETUP#14

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HI, I’M TONY.

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QUEUES

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QUEUES

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PROBLEM

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LET’S SAY YOU’RE SENDING AN EMAIL...

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LET’S SAY YOU’RE SENDING AN EMAIL...

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JUST KIDDING...

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SERVER PROVISIONING SERVICE ➔ CREATE A NEW SERVER ◆ SPIN UP A NEW SERVER INSTANCE ◆ WAIT FOR IT TO BOOT ◆ PROVISION THE SERVER (INSTALL BASE DEPENDENCIES - LIKE GIT, PHP...) ◆ NOTIFY THE USER THE SERVER IS READY (APP NOTIFICATION, SLACK…) ◆ DONE!

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CURRENT INFRASTRUCTURE

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CREATE A SERVER

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CREATE A SERVER

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QUEUES TO THE RESCUE!

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CREATE A SERVER

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CREATE A SERVER W/ QUEUES

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QUEUES ➔ BROKER (AKA. MESSAGE BROKER): SOME INTERMEDIARY TOOL USED TO EASILY SEND MESSAGES BETWEEN TWO APPLICATIONS; ◆ REDIS, DATABASE, RABBITMQ, BEANSTALKD, FILESYSTEM... ➔ WORKER: SOME APPLICATION/PROCESS THAT ACTS AS A “CONSUMER” FOR THE QUEUE MESSAGES/JOBS. ◆ CAN BE A DIFFERENT SERVER OR EVEN IN DIFFERENT LANGUAGES

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CURRENT INFRASTRUCTURE

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CURRENT INFRASTRUCTURE

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MORE ABOUT QUEUES ➔ YOU CAN SPLIT YOUR JOBS INTO CHANNELS AND HAVE APPROPRIATE WORKERS PROCESSING PER CHANNEL; ➔ CHOOSE A GOOD MESSAGE BROKER, LIKE AWS SQS FOR PRODUCTION; ➔ BE AWARE OF CONCURRENCY PROBLEMS BETWEEN WORKERS AND RESOURCES; ➔ PREPARE FOR FAILURE: WHAT SHOULD HAPPEN?

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CURRENT INFRASTRUCTURE

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WEBSOCKETS

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WEBSOCKETS

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HTTP

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CLIENT-SERVER

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HTTP FEATURES ➔ STATELESS; ➔ MEDIA INDEPENDENT; ➔ CACHING; ➔ AUTHENTICATION; ➔ HEADERS.

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WEBSOCKETS

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WEBSOCKETS

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TCP

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TCP FEATURES ➔ CONNECTION-ORIENTED; ➔ DATA IS BROKEN IN ENVELOPES/PACKETS TO BE DELIVERED PIECE BY PIECE; ➔ PERSISTENT CONNECTION.

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WEBSOCKETS

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WEBSOCKETS

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WEBSOCKETS FEATURES ➔ APPLICATION LAYER PROTOCOL (LIKE HTTP); ➔ USES TCP; ➔ BI-DIRECTIONAL, FULL-DUPLEX COMMUNICATION BETWEEN WEB BROWSERS AND WEB SERVERS.

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WEBSOCKETS PROVIDERS

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MORE ABOUT PUSHER... ➔ ACCESS CONTROL ➔ INTEGRATIONS ➔ CLIENT EVENTS ➔ FREE FOR <=200K MESSAGES/DAY && <=100 SIMULTANEOUS CONNECTIONS

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CURRENT INFRASTRUCTURE

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CURRENT INFRASTRUCTURE

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DEMO!

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REFERENCES ❏ https://speakerdeck.com/igorw/websockets-confoo ❏ https://changelog.com/podcast/31 “The WebSocket Protocol” ❏ https://www.3pillarglobal.com/insights/rabbitmq-understanding-mes sage-broker ❏ https://laravel.com/docs/5.4/broadcasting ❏ https://laravel.com/docs/5.4/queues ❏ http://kr.github.io/beanstalkd/ ❏ https://github.com/tonysm/laravel-queue-async-apps-example