How to view all keys in Redis

Methods to view all keys in Redis include: using the KEYS command to match the Key name; using the SCAN command to iterate over all keys; using the DUMP and RESTORE commands to dump and restore Key values; using the How to view all keys in Redis tool to browse Keys; for Redis clusters, use the CLUSTER KEYSLOT and CLUSTER GETKEYSINSLOT commands; and using the Lua script to generate a table containing all keys.

Redis How to view all keys

There are the following ways to view all keys in Redis:

1. KEYS command

The easiest and straightforward way is to use the KEYS command, which accepts an optional pattern parameter to match the Key name:

 <code>KEYS * # 匹配所有key KEYS mykey* # 匹配以"mykey" 开头的key</code>

2. SCAN command

The SCAN command provides a way to iterate over all keys:

 <code>SCAN cursor [COUNT num] [MATCH pattern]</code>

in:

• cursor : Continue scanning from where the last scan ends
• COUNT : The maximum number of keys returned by a scan
• MATCH : Similar to the KEYS command, specifying the Key pattern to match

3. DUMP command and RESTORE command

The DUMP command dumps the value of the specified key into binary format, and the RESTORE command can restore the dump to a new key:

 <code>DUMP mykey # 转储key 为二进制格式RESTORE newkey mykey --TTR milliseconds # 恢复key 并设置生存期</code>

4. How to view all keys in Redis Tool

How to view all keys in Redis is a GUI tool for Redis cluster monitoring and management, which provides an interface to easily browse all keys:

5. Cluster Aware Redis Command

For Redis clusters, you can use the CLUSTER KEYSLOT command to find all keys in a specific slot, and then use the CLUSTER GETKEYSINSLOT command to get the Key name:

 <code>CLUSTER KEYSLOT mykey # 查找key 所在的槽CLUSTER GETKEYSINSLOT slot</code>

6. Using Lua Scripts

You can use Lua script to generate a table containing all keys:

 <code class="lua">local keys = redis.call('keys', '*')</code>

These methods can be selected to use according to specific needs to view all keys in Redis.

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