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As a world-renowned NoSQL database, Redis has become the database of choice for many large-scale projects, and it can store more comprehensive data. Redis also has rich command functions, rich commands, etc., and its programming language is RPM (operating language). This article is to explore RPM Redis commands and how they can demonstrate its powerful features.
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RPM Redis commands are divided into the following five categories:
1. `KEYS`: Key-related commands, such as setting expiration time, or linking key and value, etc;
2. `String`: It’s the most important data type for Redis, for manipulating strings;
3. `HASH`: It’s used for manipulating hash type data;
4. `LIST`: For handling list type data;
5. `SET`: It’s used for manipulating set type data.
Below is a code example of the `KEYS` command to demonstrate its powerful features. The code below will set a key and its value in Redis:
import redis
r = redis.Redis(host='localhost', port=6379, db=0)
r.set("MY_key", "my_value")
The `String` command offers a set of functions to get and set, append, and perform string operations. Below is example code of how to get and set a variable in RPM Redis:
import redis
r = redis.Redis(host='localhost', port=6379, db=0)
name = r.get("my_key")
r.set("my_key", "my_value")
RPM Redis also provides a set of commands related to hash type data. We can use `HSET` and `HGET` commands to add / get value of a field in an hash type data. The example code below will demonstrate clearly:
import redis
r = redis.Redis(host='localhost', port=6379, db=0)
r.hset("my_hash_key", "field1", "value1")
r.hget("my_hash_key", "field1")
The `LIST` command is used to handle list type data. Below is the code example of how to append data at the end of a list:
import redis
r = redis.Redis(host='localhost', port=6379, db=0)
r.rpush("my_list_key", "value1")
Finally, the `SET` command is used to manipulate set type data. Here is a simple example to demonstrate the usage of the `SADD` command:
import redis
r = redis.Redis(host='localhost', port=6379, db=0)
r.sadd("my_set_key", "value1")
These are just a few examples of how to use the powerful RPM Redis commands to demonstrate its features. The strengths of RPM Redis commands can be better demonstrated and understood in various scenarios. It’s really a fast and reliable way to deal with databases for web applications.
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當(dāng)前文章：探索RPMRedis命令，展現(xiàn)它的強(qiáng)大功能（rpmredis命令）
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