Scaling LAMP Stacks

Scalable LAMP Stacks Jakob Heuser Alan Kasindorf OPSON Lamp Meetup Feb 2008

• Jakob Heuser - Gaia Online Engineer, Architect • Alan Kasindorf - Six Apart DBA, Former head of Gaia’s Operations

Reality: Scale Out

What We Had LB W W W W W W W W W W W W W write write M read read M S S S S

What We Had D BA LB W W W W W W W W W W W W W D write BA write M read read M D S S S S BA it’s too easy to end up like this

LAMP • Hardware • Package Management

LAMP • Not starting a religious war • Commodity != Cheap

LAMP • Automate • Simplify

LAMP • Avoid starvation • It doesn’t have to be Apache (shhhh)

Amazingly even BIGGER DB LAMP Even BIGGER DB Bigger DB DB This is Bad

Sharding Users 1-99,999 Users 100,000-199,999 Users 1-499,999 Users 200,000-299,999 Users 300,000-399,999 Users 400,000-499,999 LAMP

Sharding Users 1-99,999 DB 1 Users 100,000-199,999 Users 1-499,999 Users 200,000-299,999 Users 300,000-399,999 DB 2 Users 400,000-499,999 LAMP

Sharding Users 1-99,999 DB 1 Users 100,000-199,999 Users 1-499,999 Users 200,000-299,999 Users 300,000-399,999 DB 2 Users 400,000-499,999 DB 3 LAMP

LAMP • Caching • Replication • Fuzz testing

LAMP • Pick a framework • Avoid DB Layers that depend on “join”

Outside the Stack • OSS for anything • Pay services too

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