Drupal High Availability High Performance
Drupal High Availability High Performance How to sleep without the server-crash-fear
High Availability
High Availability no Single Point of Failure
High Availability no Single Point of Failure Redundancy
High Performance
High Performance Response times
High Performance Response times Caching
High Performance Response times Caching HTML
High Performance Response times Caching HTML Data (serialized)
High Performance Response times Caching HTML Data (serialized) Scalable
High Performance Response times Caching HTML Data (serialized) Scalable adding easy and fast more servers
Scalable & Redundancy Server System
starting position
Goal Varnish Varnish
starting position
Two Webserver
Apache/PHP
Apache/PHP APC
Apache/PHP APC precompiled
Apache/PHP APC precompiled keeps files in memory
nginx?
nginx? lightweight Webserver
nginx? lightweight Webserver Reverse Proxy
nginx? lightweight Webserver Reverse Proxy Loadbalander
nginx? lightweight Webserver Reverse Proxy Loadbalander can be faster
nginx? lightweight Webserver Reverse Proxy Loadbalander can be faster more knowledge needed
Two Webserver MySQL?
starting position
dedicated MySQL
second Webserver
How to Access??
Loadbalancer
Loadbalancer
Loadbalancer passes through request
Loadbalancer passes through request Man in the middle
Loadbalancer
second Loadbalancer
second Loadbalancer files?
NFS NFS
NFS fallback? NFS
GlusterFS
GlusterFS
GlusterFS Distributed Filesystem
GlusterFS Distributed Filesystem multiple Server/Clients
GlusterFS Distributed Filesystem multiple Server/Clients auto-heal
GlusterFS Distributed Filesystem multiple Server/Clients auto-heal split-brain
GlusterFS Distributed Filesystem multiple Server/Clients auto-heal split-brain Not so fast
GlusterFS
second GlusterFS
MySQL fallback?
MySQL Master/Slave
MySQL Master/Slave Master
MySQL Master/Slave Master WRITE
MySQL Master/Slave Master WRITE Slave
MySQL Master/Slave Master WRITE Slave READ
MySQL Master/Slave Master WRITE Slave READ Hot Spare
MySQL Master/Slave Master WRITE Slave READ Hot Spare Slave becomes Master
MySQL
MySQL
Memcache memcache?
memcache
memcache Replaces _cache tables
memcache Replaces _cache tables Key / Value Store
memcache Replaces _cache tables Key / Value Store Fast
memcache Replaces _cache tables Key / Value Store Fast Memory only
memcache Replaces _cache tables Key / Value Store Fast Memory only own Server
Memcache
Varnish Varnish Varnish
Varnish
Varnish Reverse Proxy
Varnish Reverse Proxy Hates Cookies/Sessions
Varnish Reverse Proxy Hates Cookies/Sessions No SSL
Varnish Reverse Proxy Hates Cookies/Sessions No SSL Drupal 6
Varnish Reverse Proxy Hates Cookies/Sessions No SSL Drupal 6 Pressflow
Varnish Reverse Proxy Hates Cookies/Sessions No SSL Drupal 6 Pressflow Drupal 7/8
Varnish Reverse Proxy Hates Cookies/Sessions No SSL Drupal 6 Pressflow Drupal 7/8 in Core
tadaa! Varnish Varnish
Questions! Michael Schmid michael@amazeelabs.com @schnitzel