What is Redis and What are its Unique Functions?
Redis is an open source data structure server that can be used as a database, cache, and message broker. It is typically used for web applications to improve the performance of the application by caching data in memory.
Redis is different from typical RDBMS and BIDW platforms because it is a key-value store. This means that it stores data in a hash table format which is much faster than traditional relational databases. Additionally, Redis supports a variety of data types such as strings, lists, sets, and hashes which makes it more versatile than traditional databases.
Redis was created by Salvatore Sanfilippo in 2009. It was inspired by an existing project called memcached which is a distributed memory caching system.
Redis was also designed to be a more versatile key-value store that could support a variety of data types and offer better performance than memcached.
Some of the main features of Redis include:
Data types such as strings, lists, sets, and hashes
Some of the advantages of using Redis include:
Performance – Redis is much faster than traditional relational databases because it stores data in memory.
Data types – Redis supports a variety of data types which makes it more versatile than traditional databases.
Atomic operations – Redis supports atomic operations which means that multiple operations can be executed as a single transaction. This makes it easier to manage data and avoid data corruption.
Lua scripting – Redis supports Lua scripting which allows you to write custom functions to process data.
To some users, one of the main drawbacks of using Redis is that it is a single-threaded application. This means that it can only process one request at a time which can limit its performance when handling large amounts of data. Additionally, Redis is not a persistent data store which means that data will be lost if the server is rebooted.
How to Delete Records From a Database in Redis
To delete a record from a Redis database, use the Redis del command.
For example, the following command deletes the record with the key “food” from the database “bar”: