How to compress and decompress JSON data in Go?

In Go, you can compress and decompress JSON data using the compress/flate or compress/gzip packages. Here's how you can do it:

Import the required packages:

import (
	"bytes"
	"compress/flate"
	"compress/gzip"
	"encoding/json"
	"io/ioutil"
)

Compress JSON Data using compress/flate package:

func CompressJSON(data interface{}) ([]byte, error) {
	// Convert data to JSON
	jsonData, err := json.Marshal(data)
	if err != nil {
		return nil, err
	}

	// Create a buffer for compressed data
	var buf bytes.Buffer

	// Create a flate writer
	fw, err := flate.NewWriter(&buf, flate.DefaultCompression)
	if err != nil {
		return nil, err
	}
	defer fw.Close()

	// Write compressed data
	_, err = fw.Write(jsonData)
	if err != nil {
		return nil, err
	}

	// Return compressed data
	return buf.Bytes(), nil
}

Decompress JSON data using compress/flate package:

func DecompressJSON(compressedData []byte) ([]byte, error) {
	// Create a flate reader
	fr := flate.NewReader(bytes.NewReader(compressedData))
	defer fr.Close()

	// Read decompressed data
	decompressedData, err := ioutil.ReadAll(fr)
	if err != nil {
		return nil, err
	}

	// Return decompressed data
	return decompressedData, nil
}

Compress JSON Data using compress/gzip package:

func CompressJSONWithGzip(data interface{}) ([]byte, error) {
	// Convert data to JSON
	jsonData, err := json.Marshal(data)
	if err != nil {
		return nil, err
	}

	// Create a buffer for compressed data
	var buf bytes.Buffer

	// Create a gzip writer
	gw := gzip.NewWriter(&buf)
	defer gw.Close()

	// Write compressed data
	_, err = gw.Write(jsonData)
	if err != nil {
		return nil, err
	}

	// Return compressed data
	return buf.Bytes(), nil
}

Decompress JSON data using compress/gzip package:

func DecompressJSONWithGzip(compressedData []byte) ([]byte, error) {
	// Create a gzip reader
	gr, err := gzip.NewReader(bytes.NewReader(compressedData))
	if err != nil {
		return nil, err
	}
	defer gr.Close()

	// Read decompressed data
	decompressedData, err := ioutil.ReadAll(gr)
	if err != nil {
		return nil, err
	}

	// Return decompressed data
	return decompressedData, nil
}

Now you can use these functions to compress and decompress JSON data in your Go code.