All 7 RedisJSON questions
More in RedisJSON
How do you set and retrieve a specific nested field within a JSON document using RedisJSON's path syntax? How do you work with arrays within a JSON document stored in Redis, such as adding a new item to an existing array? How can you combine RedisJSON with RedisSearch to enable searching across specific fields within stored JSON documents? How do you atomically increment a numeric value nested within a JSON document using RedisJSON? How would you design a document based data model using RedisJSON for an application that would traditionally use a document database like MongoDB? What are the performance and memory considerations when storing very large or deeply nested JSON documents using RedisJSON?
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Redis › RedisJSON

What is RedisJSON, and how does it improve working with JSON data compared to storing it as a plain string?

Beginner

Answer

RedisJSON is a module that adds native support for storing, retrieving, and modifying JSON documents directly within Redis, letting you access and update specific fields deep within a document without needing to retrieve, parse, modify, and rewrite the entire JSON string, which is required when JSON is simply stored as a plain text value.
JSON.SET user:100 $ '{"name":"Sarah","age":29,"address":{"city":"Boston"}}'
JSON.GET user:100 $.address.city
Real-world example A user profile system stores complete user documents as JSON using RedisJSON, letting the application directly update just a user's city field without needing to retrieve and rewrite the entire profile document.

Common follow-ups: How much more efficient is this compared to storing JSON as a plain string?;What happens if you try to use JSON.SET on a key that already holds a non JSON value?

Data Types;Hashes in Redis
All 7 RedisJSON questions