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 in Redis 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:
<code>redis-cli shutdown</code>
2. Back up the RDB file:
For safety reasons, it is recommended to back up the RDB file before continuing:
<code>cp dump.rdb backup-dump.rdb</code>
3. Useredis-rdb-tools
Parse RDB files:
Use redis-rdb-tools
to parse RDB files, which is a tool for processing Redis RDB files:
<code>redis-rdb-tools dump dump.rdb</code>
This command will print all key-value pairs contained in the RDB file.
4. Use the Python
library to read RDB files:
You can also use the Python library redisrdb
to read RDB files. :
<code class="python">import redisrdb with open('dump.rdb', 'rb') as f: rdb = redisrdb.Reader(f) for key, value in rdb.items(): print(key, value)</code>
5. Use the C
library to read RDB files:
You can also use the C
libraryredis- rdb
Read RDB file:
<code class="c">#include <stdio.h> #include <stdlib.h> #include <redis-rdb.h> 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; }</code>
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