best way for persistence in redis

Preface In the previous blog, the blog introduced the use cases of redis data types and the correct posture of redis distributed locks. We know that once redis is restarted, all data in redis will be lost. This blog introduces the persistence of

Redis has two types of Persistence: snapshot and aof log files. Snapshot dB files are binary files with smaller sizes than aof log files. However, the data from the last successful backup time to the down time is lost. The size of the aof file is a little larger than that of the snapshot, but it is not easy to lose the file. Currently, redis checks whether there

The following information can be obtained from the console input Info command return ( or Redis clients to find information separately ) redis_version:3.2.3Server versionredis_git_sha1:00000000redis_git_dirty:0Redis_build_id:78f5751fe6f1a0f3Redis_mode:standaloneOs:linux 2.6.32-431.23.3.el6.centos.plus.x86_64 x86_64Arch_bits:64Multiplexing_api:epollgcc_version:4.4.7process_id:8318Process Number run_id:ec21d1989ff2ec31e7733f7a8350e22400813d6ctcp_port:63

Rdb:Writes a snapshot of an in-memory dataset to disk at a specified time interval, which is the jargon-snapshot snapshot, which, when restored, reads the snapshot file directly into memory. The RDB holds the Dump.rdb fileHow the RDB works:Redis creates (fork) a child process to persist, writes the data to a temporary file, finishes the persistence process, and replaces the last persisted file with the temporary file. Throughout the process, the main

, ↑ a balance between data security and performance. Turn on Aof:appendonly Yes (default does not open)AOF file name: Appendfilename (default file name appendonly.aof)Save path: Dir (same RDB) 3.1 aof is the mainstream way of Redis persistence AOF Workflow:Command Write (Append)->aof buffer--File sync (sync)->aof file--file rewrite (rewrite) All write commands

Description of two Redis persistence Methods Before talking about Redis persistence, you need to understand what is the concept of database status, because persistence is to save the database status in memory to the disk. So what is the database status?

Docker Installation Redis method One, build through Dockerfile Create Dockerfile First, create a directory Redis, which is used to store the related things behind. runoob@runoob:~$ mkdir-p ~/redis ~/redis/data The data directory will be mapped to the/data directory configured by the

Redis's excellent performance is because it stores all the data in memory, the same memcached do, but why Redis can stand out, largely because Redis has excellent persistence mechanism to ensure that the server restart, the data will not be lost. Here's a look at how Redis is persisted.

1: persistence is not enabled in the redis master-slave environment. When the master instance goes down, data from the instance is not affected. When the master instance recovers, data on the master instance will be synchronized to the slave instance, that is, the original value will change to a null value; [root @ ser 1: persistence is not enabled in the

Redis uses Persistence for data migration Preface Redis is an open-source high-performance Key-Value Pair database. It provides a variety of key-value data types to meet the storage needs in different scenarios, and uses many high-level interfaces to make it competent for different roles such as cache and Queue Systems. Redis