![]() ![]() This response indicates that the script exists. ![]() The command executes scripts directly from the Redis CLI: How to Write Lua Scripts for a Redis Serverīasic Redis scripts can be executed using the EVAL command. Doing so can lead to bad architectural and design practices when developers rely on it to implement application logic rather than data-level logic. Scripting also executes logic on the database. Because the Redis server blocks other operations while a script is running, lengthy scripts may actually result in negative performance impacts. However, scripts are not suited to all cases. The Lua language offers simplicity and conciseness, making it an effective language for scripting tasks. Steps get executed atomically, meaning that the server prevents other actions while a script is still running. Logic lives directly on the database server, which can be useful for logic used across multiple applications. Tasks are executed directly on the database server, often increasing their performance substantially. So why would you use a Redis script over executing commands directly, or from your application itself? Because with scripts: ![]() A Redis script allows you to use programming tools like control structures, while having access to almost all Redis commands. Scripting allows you to execute complex tasks within Redis. If you’re not familiar with the sudo command, see the Users and Groups guide. Commands that require elevated privileges are prefixed with sudo. This guide is written for a non-root user. Be sure to use the drop-down menu at the top of the page to select your Linux distribution and view the appropriate steps. You may also wish to set the timezone, configure your hostname, create a limited user account, and harden SSH access.įollow the instructions in our How to Install a Redis Server guide to install a Redis server and command line interface (CLI). See our Getting Started with Linode and Creating a Compute Instance guides.įollow our Setting Up and Securing a Compute Instance guide to update your system. If you have not already done so, create a Linode account and Compute Instance. The tutorial covers the pros and cons of Redis scripting, creating and deploying scripts, and managing cached scripts. In this tutorial learn what Redis’ Lua scripting has to offer and how you can start using it on your Redis database. Script logic gets executed on the database server, allowing them to be reused, and often increasing performance. Redis uses Lua for scripting, letting you consolidate more complicated tasks in an efficient way. Web application developers find Redis a powerful ally for application caching, messaging, and many other operations. Redis is an open source NoSQL database that offers low-latency in-memory storage of data structures. ![]()
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