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-# micro services - perf
-
-## Overivew
-
-glu mobile - microservices
-
-- Use docker
-- HTTP processing
-- Amazon ECS
-- NOSQL Redis + couch base
-- 40M votes a day
-- 1M active users
-- 14K req/m
-
-## Microservices
-
-- Small
-- Simole
-- easy to deploy
-- upgradable
-
-Use Base images
-Name by version and never change (Freeze them)
-
-## background processing
-- Execute externally
-- Shutdown functions
-- Job server
-- fastcgi_finish_request
-
-## HTTP Compression
-
-- gzip on
-- gzip_types
-- gzip_proxied any
-- gzip_comp_level 5
-- gzip_min_length (default 20)
-- Smaller than 1500B means it will always fit in one TCP packet
-
-If content_length is not set then nginx will compress always
-
-Laravel/Lume/Others add middleware to add content_length
-
-## Caching
-- HTTP2 Server push
-- Repeated server calls HTTP1
-- 304s
-    - Last-modified
-    - cache-control
-
-## No SQL
-- Mongo/Redis
-- Fight network I/O
-- save hdd space
-- compress large messages
-- serialise better
-- message templates
-- add ttl expiry
-- shorten cache keys
-
-## Fast caching
-- PHP Redis
-- Predis - high memory, slower
-- Persistent connections available
-
-## Deployment EC8
-- 0 Downtime
-- quick rollout
-- ELB health-check
-- Auto scaling
-
-## Hardware upgrades
-- Doubling the hardware, halving the # of machines
-
-## VPC
-- Closer together
-- Same location
-- utilise internal networks
-- other thoughts
-    - Async I/O
-    - swoole
-    - HTTP/2
-    - Tars
-        - binary (80% reduction)
-
-## Managing images
-- Don't use aptitude (apt)
-- Build from source
-- fpm and Nginx together
-    - Separate not helpful
-    - No need for TCP/IP overhead
-- supervisorD - everywhere
-
-# Useful terms
-aerospike
-couch base
-php_swoole
-supervisorD
-new relic
-bugsnag
-amazon cloud watch
-sonarqube
-sensolabs security checker
-fastcgi_finish_request
-crowdstar https://github.com/Crowdstar/background-processing