In parallel, use Redis to prevent repeated data insertions (the database is not set to table fields only)

@Controller @requestmapping ("/mytest") public class testcontroller {    @ Autowired (Required = false)     private TestService testService;          @Autowired     private RedisUtil  redisutil;     @RequestMapping ("Add")     public void add (

The comparison between Redis and memcached

Original: http://blog.nosqlfan.com/html/3729.htmlThe two years of Redis fire, Redis is often used as a memcached challenger to be mentioned on the desktop. The comparison between Redis and memcached is ubiquitous. However, does Redis really go

Questions about Redis Overcommit_memory under Linux

First, BackgroundThe company's Redis sometimes background save db is unsuccessful, and the following alarm is found through log, which is likely to be caused by it:[13223] ~ Mar 13:18:02.207 # WARNING Overcommit_memory is set to 0! Background save

Three. Redis sort

This article describes the following Redis sort commands. Redis supports ordering of 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]

Redis list data type

List data typeList is a linked list structure, the main function is Push,pop, get all the values of a range and so on. In operation, key is understood as the name of the list, and the Redis list is actually a doubly linked list in which each child

Redis error.

Misconf Redis is configured to save the RDB snapshots, but was currently not able to persist on disk. Commands that may modify the data set is disabled. Please check your Redis logs for details about the error.Problem occurs : The Set key value in

Redis's aof log persistence

configuration of Aof appendonly no#whether to turn on the AOF log featureAppendfsync always#every 1 commands are synchronized to aof immediately. Safe, slowAppendfsync everysec#compromise, write 1 times per secondAppendfsync No#write work to the

Redis-based CAS cluster configuration

1, CAS ticket unified storageAs a CAS cluster, we first need to take ticket out and do the unified storage so that each node accesses the same data. The official offer is based on the memcached program, which needs to be counted into Redis due to

Sinsing analysis of string types in Redis

The string type is the most basic type of data storage in Redis, which is binary safe in Redis, which means that the type can accept data in any format, more than data, such as JSON objects, and that the value of a string type in Redis can hold up

Sinsing analysis of key-related commands in Redis

in Redis, we can also directly operate on key, the following are the main commands we use:(1) Keypattern it means to get all the keys that match the pattern, and it's important to note that we should avoid using this command because the command is

Redis Data Logging

Redis Official website: http://redis.io/Redis Tutorial: http://www.yiibai.com/redis/Redis Start: http://www.cnblogs.com/shanyou/archive/2012/01/28/2330451.htmlCommon commands in Redis: http://www.cnblogs.com/liuling/p/2014-4-19-03.htmlRedis

Redis Learning Notes and Summary 1 installation deployment

NoSQL Usage Scenarios:1. High concurrency for data read and write2. Efficient storage and access to massive amounts of data3. High scalability and high availability of dataRedis is often referred to as a data structure server because keys can

Redis application case, finding a range of values

Original: Https://groups.google.com/forum/#!topic/redis-db/lrYbkbxfQiQThis article comes from a problem with Redis on Google Group, a classmate posts for help, said to solve one of the following problems: He has an IP range corresponding to the list

Redis Main commands

Commands related to connection operations Quit: Close connection (connection) Auth: simple Password Authentication Persistence save: Save data synchronously to disk bgsave: Asynchronously saves data to disk

Getting Started with the Redis memory cache system

Website: http://redis.io/ Key-value Cache and store data structure Server 1. Server-side1.1 InstallationDownload the installation package: Http://redis.io/download After you unzip, make. wget http://download.redis.io/releases/redis-3.0.0.tar.gztar

Installation of Redis

Installation of Redis under Windows systemRedis is a widely used Key/value memory database that is used as a cache in large applications such as Sina Weibo, Github, StackOverflow, and Redis's official website is http://redis.io/.Recently want to the

Redis achieves efficient, non-missing event encapsulation

Although Redis has a subscription function, the subscription function is real-time, and after this point, the message is not received.At the same time, if the subscribed client is shutdown for some special reason, it will not find a full

Redis configuration cluster encounters problems and solutions

After configuring all master nodes, report "ERR Invalid node address specified"Because REDIS-TRIB.RB does not support the domain name or hostname, the ip:port is used when creating the cluster.REDIS-TRIB.RB Create Ip1:port1 Ip2:port2 ip3:port3

Introduction and installation of Redis

1.redis Features: Non-relational, distributed, open-source, horizontally scalable, master-slave replication2. Handling ultra-large amounts of data, running on inexpensive PC clusters, high concurrency read and write, efficient storage and access of

Redis Server-related commands

Server-related commandsPing output Pong represents a responsePkill Redis-server Kill Redisecho 123456 Output commandQuit Quit connectionDbsize returns the number of keys in the databaseInfo Gets the information and statistics of the serverConfig Get

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