Memcached (i) First acquaintance

Official address:

http://memcached.org/

Introduction

Why are there memcache and memcached two kinds of names?

In fact, Memcache is the name of this project, and Memcached is the main program file name on its server side.

Memcache Official website: http://www.danga.com/memcached, http://memcached.org/

For WEB2.0, the following features are present:

Many Web applications save data to an RDBMS, where the application server reads the data and displays it in the browser. However, with the increase of data volume and the concentration of access, there will be significant impacts such as the burden of RDBMS, the deterioration of database response and the delay of Web site display.

Then it's time to memcached. Memcached is a high-performance distributed memory cache server. The purpose of the general use is to reduce the number of database visits by caching database query results to improve the speed and scalability of dynamic Web applications.

Memcached as a high-speed running distributed caching server, has the following characteristics.

Simple protocol

Event handling based on Libevent

Built-in memory storage mode

Memcached distributed without communication with each other