Redis

1. Problems with the mysql+memcached architecture The actual MySQL is suitable carries on the massive data storage, through memcached hot spot data loading to the cache, speeds up the visit, many companies have used this kind of architecture, but

Before this function is not concerned, the Memcache data storage method has been used, but since the replacement of Redis, for a hash of data storage and access for Memcache is very convenient, but the problem is, a hash of the list if the amount is

Gradual, from easy to difficult, so that more fun. Overview This article began to continue on the basis of the content, this article mainly introduces Spring-session implementation configuration using Redis cluster, there will be two ways to

1, the use of technology and version number JDK8.0 Spring 5.0 oauth2.0 redis2.0 2, the project uses MAVEN management. Pom File Add: Dependency> groupId> Org.springframework.cloud groupId> Artifactid> Spring-cloud-starter-security Artifactid>

A. Redis command explanation:SETNX () command:The meaning of SETNX is the set if not Exists, which mainly has two parameters setnx (key, value). The method is atomic if key does not exist, then the current key is set successfully, returns 1, and if

blpop key [key ...] timeout Blpop is the list of blocked (blocking) pop-up primitives.It is a blocked version of the Lpop command, and the connection is blocked by the Blpop command until a wait time-out or a popup element is found when no elements

EVAL script Numkeys key [key ...] arg [arg ...] Starting with the Redis 2.6.0 release, the LUA script can be evaluated using the EVAL command with the built-in LUA interpreter.The script parameter is a LUA 5.1 script that runs in the Redis server

http://nkcoder.github.io/blog/20141106/elkr-log-platform-deploy-ha/ 1. Architecture for highly available scenarios In the previous article using Elasticsearch+logstash+kibana+redis to build a log management service describes the overall framework

Glusterfs how to cluster, online a search overwhelmingThis feature can be used to make a single node high availability, because k8s even if the node down the master will be at random a node to put off the resurrectionOf course, I am running in my

First, RedisRedis 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.Redis is a key-value storage system. Similar to memcached, it supports storing more

Reprint Address: http://www.cnblogs.com/whoamme/p/3530056.htmlSoftware source code Package storage location:/USR/LOCAL/SRCSource Package Compilation Installation location:/usr/local/software NameTo modify a source:1. Go to the folder where the

Original: http://blog.csdn.net/l1028386804/article/details/735238101. Can be re-entered lock (Reentrant lock)Redisson's distributed reentrant lock Rlock Java object implements the Java.util.concurrent.locks.Lock interface, and also supports

First solve the problem of crawler wait, not be closed:1, the Scrapy internal signaling system will trigger the spider_idle signal when the crawler exhausts the request in the internal queue.2, the crawler signal Manager receives the SPIDER_IDLE

Qps/tpsbenchmark tool for measuring REDIS processing actual production requestsThe Redis release version comes with the Redis-benchmark Performance test tool;Example:With 50 concurrent connections, 100,000 requests are made, and the data for each

Recently, using the Redis list for cross-process Message Queuing, clients are using Redis-cplusplus-client. This client library is fine, and it's handy to have a consistent interface with redis command line.The following problem was found during use.

Today when using the Stackexchange Redis client. I wanted to use Brpop, but I found that Stackexchange Redis did not provide an API and had no way of looking for documents.The original Stackexchange Redis uses multiplexing (multiplexing), which

When I read the Redis source code, I saw two files: crc16.c, crc64.c. Let me take a brief look at the principle.CRC, cyclic redundancy check code , is a common error-checking code in information system. In the course of the university curriculum,

From: http://blog.nosqlfan.com/html/3379.html? Ref = rediszt InstagramIt can be said that it is the first application of the online photo app and one of the hottest photo apps currently. The number of Instagram photos has reached 0.3 billion,

Set VIP in Redis-Sentinel's client-reconfig-scriptSet VIP in Redis-Sentinel's client-reconfig-script When using Redis-Sentinel for redundancy, how can we use VIP in different ways? I think using client-reconfig-script is a feasible method. Let's try

Redis suddenly fails and cannot be started. Check the log and report Short read or OOM loading DB. Unrecoverable error, aborting nowSolution:[Root @ localhost ~] # Rm-f/var/lib/redis/dump. rdb[Root @ localhost ~] # Rm-f/var/run/redis. pid[Root @