Shulou(Shulou.com)05/31 Report--

Today, the editor will share with you the relevant knowledge points about how to use Redis and Memcached in php. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article. Let's take a look.

Differences

1. Redis is a memory database. Memcache can also cache photos.

Redis and Memcache store data in memory, which is a memory database. However, Memcache can also cache other things such as photos and videos. Redis not only supports simple KBH type data, but also provides storage of list, set, hash and other data structures.

Expiration strategy, specified by memcache at set. For example, setkey1008 never expires. Redis can be set through expire. For example, expirename10.

Storage is secure. After memcache is closed, redis with missing data can be saved on disk on a regular basis.

Disaster recovery, after the memcache hangs up, the redis data that cannot be recovered can be recovered through aof.

Redis supports data backup, that is, data backup in master-slave mode.

Different application scenarios:

2. Redis can make nosql database, news queue and so on. Memcache can also cache sql statements.

Redis can make not only nosql database, but also news queue, data stack, data cache and so on. Memcache is suitable for caching sql statements, datasets, user temporary data, deferred query data, session, and so on.

Example

Connect to the Redis service

The use of Memcached

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