Evolution of large-scale websites

WHAT IS LARGE-SCALE WEBSITE?

3 billions PVGoogle

24 x 7 - 100%Usability

1 billion imagesFacebook

They all begin as ...

SYSTEM ARCHITECTURE

SPLIT APPLICATION AND DATABASE

“For many events, roughly 80% of the effects come from 20% of the causes.

▸ Vilfredo Pareto, Italian economist

CACHE

APPLICATION CLUSTER AND CACHE

DATABASE READ AND WRITE SEPARATION

Place your screenshot hereBut,it is not done yet ...

CDN and REVERSE PROXY

THERE ARE MORE

NoSQL and Search EngineTechniques to speed up data storage and data search

Business splitFor examples, facebook’s home page and message page are developed and maintained by different teams

Database splitBased on business transaction.Single table horizontal split.Single table vertical split.

WHAT I HAVE LEARNT

▸ Evolution▸ Business achieves technology▸ Core value of the system

architecture

THANKS!