Redis

Redis is an open source API that is written in ANSI C, supports the web, can be persisted in memory, key-value databases, and provides multiple languages. It provides a variety of mainstream languages for the client, easy to use, while Redis

MemcachedMemcached is a high-performance distributed memory object caching system for dynamic Web applications to mitigate database load. It improves the speed of dynamic, database-driven Web sites by caching data and objects in memory to reduce the

A) Compile and installMakemake Install (/usr/local) make install PREFIX= $HOME/progs (You can freely specify the installation path)B) Synchronous API interfaceRediscontext *redisconnect (constcharint port); void Const Char *format, ...); void

An RDB is another form of persistence for Redis, which is equivalent to a timed snapshot and also to the snapshot +redo log in master-slave synchronization. Redis does not require a lock when it makes an RDB, which is done by using the parent-child

(The English part is a turn.) Code is personal code)1 What ' s inotify   The inotify  api provides a mechanism for monitoring file system events. Inotify can used to monitor individual files, or to monitor directories. When a directory is

Reprinted from: Http://stackoverflow.com/questions/10558465/memcached-vs-redisUpdated 10/9/2014Today marks the day this memcached no longer has a significant advantages over Redis and while Redis continues to having many Distinct advantages over

Distributed cache can solve the bottleneck that the memory of single server cannot expand indefinitely. In distributed cache applications, you encounter multiple client contention issues. At this time, a distributed lock is required, and the client

I. BackgroundThe recent use of Spring-data-redis and Jedis to operate Redis found that the key stored in Redis is not a string value set in the program, and there are many more strings similar to \xac\xed\x00\x05t\x00 in front of it. Second, the

Redis has problems with data errors when it comes to network transmissions and RDB backups, so it uses data validation. Includes a validation algorithm that uses the CRC64. The CRC test principle is actually the addition of an R-bit binary test code

Redis sort uses the sort command. The ability to sort the values of a list key, a collection key, or an ordered collection key.A few simple examples:(1) Sort the values of the list key (list of values)127.0.0.1:6379> Rpush numbers 1 4 8 2 3 9

In a multi-node deployment, the control of the lock, refer to:Http://www.jeffkit.info/2011/07/1000/Directly affixed to the code implementation, as in the same article, are based on the AOPdefining annotations, marking pointcuts:

Redis supports ordering of the List,set and sorted set elements. The sort command is the sort complete command format as follows: SORT key [by pattern] [LIMIT start count] [GET pattern] [asc| DESC] [ALPHA] [STORE Dstkey] 1.

Pre-conditions:1. PHP development environment has been built2. Redis is installedWindows install the Redis extension for PHP1. by Phpinfo (); function to view PHP information2. Download Redis extension file: Https://pecl.php.net/package/redis3.

Introduction of common data types:There are five data types used by Redis: String,hash,list,set,zset (sorted set).1.String type String is the simplest type, and a key corresponds to a valueThe data of type string is 1G maximum. A string

This article mainly introduces the installation and configuration of Redis, Nginx and Tomcat have written a very detailed document, please refer to: http://francis905.blog.51cto.com/3048056/1716740Lab Environment: 3 virtual machines

Redis master-slave configuration and Redis Auto-switch high availability via keepalived [Date: 2014-07-23] Source: Linux Community Fuquanjun [Font: Big Small] A: Environment introduction:master:192.168.1.4slave:19

Reprint: Implementation of distributed lock based on Redis, Source: http://blog.csdn.net/ugg/article/details/41894947BackgroundIn many Internet product applications, some scenarios require lock processing, such as: seconds, global Increment ID,

Redisis aCSmode ofTCP Server, use andhttpa similar request-response protocol. AClientcan be through aSocketThe connection initiates multiple request commands. After each request command is issuedClientit usually blocks and waitsRedisService

In the previous article we wrote the Redis task queue.In addition to implementing the task queue, Redis also provides a set of commands that enable developers to implement the Publish/subscribe (publish/subscribe) mode . The "Publish/subscribe" mode

1 What is persistentRedis is an in-memory database that loses power and transfers data. Persistence is the conversion of memory data to hard disk data.Of course, you can also drive to memory (the concept of backup, save, restore). 2 How to