Reread large web site technology architecture

It took a day to reread the book, the book is not deep, popular reading, said very much. Let's take a note:

1. Schema mode

Tiering, partitioning, distributed (applications and services, static resources, data and storage, distributed computing), clustering, caching (CDN, reverse proxy, local cache, distributed cache), async, redundancy, automation, security

2. Core elements

A. Performance

Metrics: Response time, concurrency count, throughput, performance counters

Testing: Performance testing, load testing, stress testing, stability testing

Optimization: 1 Front end: Browser: Reduce HTTP requests, use browser cache, enable compression, CSS at the top JS at the bottom, reduce cookie transfer, CDN, reverse proxy

2 servers: Distributed cache, asynchronous operations, using clusters, code optimization

3 Storage optimization: RAID VS HDFS

B. Availability

High-availability applications: Stateless failover, session management of the cluster (session copy, session binding, cookie recording session,session server)

Highly Available services: Hierarchical management, timeout settings, asynchronous invocation, service demotion, power-reference design

High-availability data: Caps, data backup, fail-over

C. Flexibility

Load balancing: HTTP redirect, DNS domain name resolution, reverse proxy, IP, Data Link layer (MAC address, LVS). Algorithm: Polling, weighted polling, random, minimum connection, source address hash.

Distributed cache consistency hash, relational database Cobar,nosql natural

D. Extensibility

Distributed Message Queuing

Distributed services

E. Security

XSS (reflective, persistent)-"filter, HttpOnly

SQL injection-"filter, bind variable

CSRF Cross-site forgery-"form token, verification code, Referer check

White list better than blacklist

Reread large web site technology architecture