Shulou(Shulou.com)06/01 Report--

This article mainly introduces the method of redis data storage, the article is very detailed, has a certain reference value, interested friends must read it!

What is redis?

Redis is a high-performance key-value database. The emergence of redis makes up for the deficiency of key/value storage such as memcached to a great extent, and can play a good complementary role to relational database in partial situations. It provides clients such as Java,C/C++,C#,PHP,JavaScript,Perl,Object-C,Python,Ruby,Erlang, which is easy to use.

How does redis store data?

Redis saves data to memory, but it also writes data to the hard disk on a regular basis.

There are two ways for Redis to save data:

1. Snapshot mode (Snapshot)

It supports two snapshot modes:

1. Timed snapshot, that is, the data in memory is saved to disk at a certain time.

two。 Quantitative snapshot, that is, the data is saved to disk after a certain number of changes.

II. Write mode (Append Only File)

In this mode, Redis saves all commands that modify the data (such as Update,Set) into an ASAP file that can only be appended, and when Redis restarts, it reexecutes the commands in this file.

Where is the data saved?

The data is saved to a data file. The specific file name depends on the configuration file of Redis, namely Redis.conf.

Config get dbfilename (returns dump.rdb)

You can use config set dbfilename new (modify the file where you want to save the data)

These are all the contents of redis's method of storing data. Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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