What protocol does redis use?

Redis uses the Redis Protocol (RESP), a binary protocol with the following advantages: Fast and efficient: Binary-based, faster than text protocols. Ease of use: Easy to parse and write client libraries. Extensible: supports adding new commands and functions.

Protocol used by Redis

Redis uses a binary protocol called Redis Protocol (RESP), which Is a simple, easy-to-parse string protocol.

Advantages of the protocol

RESP protocol has the following advantages:

• Fast and efficient:RESP protocol is binary , and therefore faster and more efficient than text-based protocols such as HTTP.
• Easy to use: The protocol is easy to parse and write client libraries.
• Extensible: The protocol is extensible, allowing new commands and functionality to be added in the future.

Structure of the protocol

RESP protocol consists of the following elements:

• Type byte: A single byte representing the reply type, such as string ($), array (*), or error (-).
• Length bytes: A sequence of bytes representing the length of the reply payload.
• Payload: Actual reply data, encoded as UTF-8 string or binary data.

Sample reply

An example of a RESP protocol reply to obtain the value of the key "my_key" is as follows:

<code>$+5
hello</code>

• $ indicates that the reply type is a string.
• 5 means the string length is 5 bytes.
• hello is the string payload.

Using RESP protocol

You can use RESP client libraries in various languages ​​​​(such as Python, Java, Node.js) to connect to the Redis server and Use Agreement. These client libraries handle the complexity of the protocol, allowing developers to easily interact with Redis.

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