How to read data in rdb with redis

How to read data from Redis RDB to stop and back up the Redis server. Use redis-rdb-tools to parse RDB files. Read RDB files using the Python library redisrdb or the C library redis-rdb.

How to read data from Redis RDB

For storage inRedis Database (RDB)The Redis data in the file can be read through the following steps:

1. Stop the Redis server:

Use the following command to stop the Redis server:

redis-cli shutdown

2. Back up the RDB file:

For safety reasons, it is recommended to back up the RDB file before continuing:

cp dump.rdb backup-dump.rdb

3. Useredis-rdb-toolsParse RDB files:

Useredis-rdb-toolsto parse RDB files, which is a tool for processing Redis RDB files:

redis-rdb-tools dump dump.rdb

This command will print all key-value pairs contained in the RDB file.

4. Use thePythonlibrary to read RDB files:

You can also use the Python libraryredisrdbto read RDB files. ：

import redisrdb with open('dump.rdb', 'rb') as f: rdb = redisrdb.Reader(f) for key, value in rdb.items(): print(key, value)

5. Use theClibrary to read RDB files:

You can also use theClibraryredis- rdbRead RDB file:

#include  #include  #include  int main() { FILE *fp = fopen("dump.rdb", "rb"); if (fp == NULL) { perror("Error opening RDB file"); return EXIT_FAILURE; } redisrdb_reader *reader = redisrdb_create_reader(fp); if (reader == NULL) { perror("Error creating reader"); fclose(fp); return EXIT_FAILURE; } redisrdb_keyval *kv; while ((kv = redisrdb_read_keyval(reader)) != NULL) { printf("%s %s\n", kv->keydata, kv->valdata); redisrdb_free_keyval(kv); } redisrdb_free_reader(reader); fclose(fp); return EXIT_SUCCESS; }

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