Gain insights into Redis's capabilities as a database, cache, and message broker. Delve into commands, transactions, and clustering. Explore flexibility, security, and data structure support with Redis.

Redis.tar.gz

Redis is an open-source, in-memory data structure store used as a database, cache, and message broker. Unlike Memcached, it supports multiple data types, giving a lot of flexibility to the user. Redis is easy to configure and provides clustering support to store data in multiple servers.

In this course, you will learn about the various commands that you can use to store different types of data structures in Redis. Some of those commands include utility, insertion, and modification commands.

You will also become familiar with different aspects of Redis, such as transactions, security, partitioning, and clustering. In all, this is your go-to guide to Redis.

Complete Guide to Redis

##  `ZREM` command
The `ZREM` command is used to remove a member from the sorted set. The syntax of this command is:
> ZREM *key value*

![](/api/collection/6650775272947712/6601946975698944/page/5388523877171200/image/6374412480675840)

##  `ZRANK` command
The `ZRANK` command is used to find the index of an element in the sorted set. If the rank of an element is 0, then its score is the lowest. The syntax of this command is:
>ZRANK *key member*

Please note that the index starts at 0. In the example below, we are fetching the index of Canada in our set.

![](/api/collection/6650775272947712/6601946975698944/page/5388523877171200/image/5238732597755904)

##  `ZREVRANK` command

The `ZREVRANK` command is used to find the rank from the reverse. If the rank of an element is 0, then the score is the highest. The syntax of this command is:
> ZREVRANK *key member*


![](/api/collection/6650775272947712/6601946975698944/page/5388523877171200/image/4891108627709952)

##  `ZSCORE` command
To get the score of an element, use the `ZSCORE` command. The syntax of this command is:
>ZSCORE *key member*

![](/api/collection/6650775272947712/6601946975698944/page/5388523877171200/image/5012874909974528)

# `ZREM` command
The `ZREM` command is used to remove a member from the sorted set. The syntax of this command is:
> ZREM *key value*

![](/api/collection/6650775272947712/6601946975698944/page/5388523877171200/image/6374412480675840)

# `ZRANK` command
The `ZRANK` command is used to find the index of an element in the sorted set. If the rank of an element is 0, then its score is the lowest. The syntax of this command is:
>ZRANK *key member*

Please note that the index starts at 0. In the example below, we are fetching the index of Canada in our set.

![](/api/collection/6650775272947712/6601946975698944/page/5388523877171200/image/5238732597755904)

# `ZREVRANK` command

The `ZREVRANK` command is used to find the rank from the reverse. If the rank of an element is 0, then the score is the highest. The syntax of this command is:
> ZREVRANK *key member*


![](/api/collection/6650775272947712/6601946975698944/page/5388523877171200/image/4891108627709952)

# `ZSCORE` command
To get the score of an element, use the `ZSCORE` command. The syntax of this command is:
>ZSCORE *key member*

![](/api/collection/6650775272947712/6601946975698944/page/5388523877171200/image/5012874909974528)

Learn about some utility commands for sorted sets in Redis.

Let's Begin

Redis Commands

Redis Advanced Concepts

Redis Cluster

Appendix

Storing Sorted Set in Redis: Utility Commands

`ZREM` command

`ZRANK` command

Storing Sorted Set in Redis: Utility Commands

ZREM command

ZRANK command

`ZREM` command

`ZRANK` command