Let's talk about how to generate request ID in Golang

Golang is a very popular programming language and is widely used in cloud computing, big data, blockchain and other fields. In the actual development process, we often need to generate a unique identifier for each request to track and debug requests. This article will introduce how to generate a request ID in Golang.

1. UUID

UUID is a 16-byte (128-bit) number used to identify information, usually expressed as a 32-bit hexadecimal number, which can ensure global Uniqueness. In Golang, we can use the introduced uuid library to generate UUID:

import "github.com/google/uuid"

id := uuid.New()
fmt.Println(id)

In this way, we can generate a random UUID identifier. However, the UUID is relatively long and is not suitable for display in the log, so we usually shorten it to a shorter string.

2. ShortID

ShortID is a tool for generating short strings. It is based on the UUID algorithm and can generate strings with a length of 7 to 14 characters while ensuring global uniqueness. sex. In Golang, we can use the shortid library to generate ShortID:

import "github.com/teris-io/shortid"

sid, _ := shortid.New(1, shortid.DefaultABC, 2342)
id, _ := sid.Generate()
fmt.Println(id)

In this way, we can generate a random identifier with a length of 7 to 14 characters.

3. Snowflake

Snowflake is an open source algorithm based on Twitter that can generate a unique ID with a length of 8 bytes, which contains information such as machine ID, timestamp, and serial number. In Golang, we can use the introduction sonyflake library to generate Snowflake:

import "github.com/sony/sonyflake"

sf := sonyflake.NewSonyflake(sonyflake.Settings{})
id, _ := sf.NextID()
fmt.Println(id)

In this way, we can generate a unique identifier with a length of 8 bytes.

Summary

In Golang, we can use algorithms such as UUID, ShortID and Snowflake to generate unique request IDs. Different algorithms have different characteristics and scope of application. We can use them according to actual needs. Make your selection. The generation of request ID is a relatively basic and important function, which can help us make debugging and tracking requests more convenient and efficient.

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