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Why Does Redis Use Lua?

James H. Sterling • • 6 min read
Why Does Redis Use Lua?
Lua scripts are really powerful. As you described it correctly, it allows to limit network roundtrips between the redis server and the client. Also, you don't send the script as String all the time, only the SHA1 should be sent after the first call, which is quite small.

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Hereof, what is Lua script in Redis?

Advertisements. Redis scripting is used to evaluate scripts using the Lua interpreter. It is built into Redis starting from version 2.6. 0. The command used for scripting is EVAL command.

Similarly, what is Lua code? Lua is a powerful and fast programming language that is easy to learn and use and to embed into your application. Lua is designed to be a lightweight embeddable scripting language. It is used for all sorts of applications, from games to web applications and image processing.

Accordingly, what is a Lua file?

A LUA file contains source code written in Lua, a light-weight programming language designed for extending or adding functionality to software applications. Lua is used for various purposes, including scripting in applications or on the web, programming games, and adding extensions to databases.

Can Redis store JSON?

Redis as a JSON store. Fact: despite its multitude of core data structures, Redis has none that fit the requirements of a JSON value. Sure, you can work around that by using other data types: Strings are great for storing raw serialized JSON, and you can represent flat JSON objects with Hashes.

Related Question Answers

Is Redis atomic?

All commands in a transaction are sequentially executed as a single isolated operation. It is not possible that a request issued by another client is served in the middle of the execution of a Redis transaction. Redis transaction is also atomic. Atomic means either all of the commands or none are processed.

What is Redis server?

Redis is an open source (BSD licensed), in-memory data structure store, used as a database, cache and message broker. It supports data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes with radius queries and streams.
James H. Sterling
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James H. Sterling

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.