best way for persistence in redis

In the case of running, Redis saves data in memory as a structure, and in order for data to be available after Redis restarts, Redis provides two ways to persist the RDB and aof, this article explains how RDB persistence works At run time, Redis stores the in-memory database

-slave) synchronization. If you simply compare the differences between Redis and memcached, most will get the following view: 1, Redis not only support the simple k/v type of data, but also provide list,set,zset,hash and other data structure storage. 2, Redis support data backup, that is, Master-slave mode of master-slave replication 3,

Redis offers two persistence modes, RDB and aof; unlike an RDB, aof can completely record an entire database, unlike an RDB that is just a snapshot of a database at a time; So why does the aof pattern completely record the entire database? Principle: In aof mode, Redis will record each update command executed and save it to the AoF file, and when

Label:Redis is a key value to the database server, the server usually contains any non-empty database, and each non-empty database can also contain any key value pairs, for the sake of convenience, we have a non-empty database in the server and their key-value pairs are collectively referred to as the database state. Because Redis is a memory database, it stores its own database state in memory, so if you do not try to save the database state stored i

wait/waitpid functions: If there are multiple sub-processes, what should I do? select multiple wait, but at the same time, it may process one sub-process. Other process statuses are not processed, resulting in many zombie processes. This is not feasible. with the waitpid function: Waitpid (pid_t pid, int * status, int options) Pid =-1 waiting for any sub-process > 0 indicates the sub-process to be passed in. Parameters: WNOHANG: return immediately without blocking. Other parameters are not stud

Original link: http://www.cnblogs.com/tdws/p/5754706.htmlThe persistence of Redis does not require too much involvement by our developers, what are we going to do? In addition to an in-depth understanding of the role of RDB and AOF , the rest is based on the actual situation to develop appropriate strategies, and more complex, that is, to customize a high-availability, data security Strategy .RDB: The snaps

Append, file will become larger to avoid this situation, the new rewrite mechanism, when the size of the aof file exceeds the threshold set, Redis will start the AoF file content compression, only the minimum set of data can be recovered, you can use bgrewriteaof ② principle AOF files continue to grow too large, a new process will be fork to rewrite the file (also to write temporary files last rename), traversing the memory of t

1. redis, as a memory database, needs to store a large amount of user data, but the data stored in redis is stored in the memory. Due to power failure or downtime, memory data will certainly be lost. To prevent data loss, usePersistence ModeTo back up memory data; When redis memory contains data, there are two methods through its own policy. One isRDB Mode, One

Tags: redis persistent RDB AOFWhat is the difference between Redis and memcache?Simply put, if you don't have a persistent redis, it's just like Memcache, which is the equivalent of a cache database.How does Redis solve data persistence?