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Get All Keys Starting With a Specific Prefix in Redis using Golang (Detailed Guide w/ Code Examples)

Use Case(s)

Redis is often used to store key-value pairs where keys may have a common prefix that denotes some logical grouping. For instance, you might store user-related data with keys like user:1:name, user:1:email, user:2:name, etc.

Sometimes you need to retrieve all keys starting with a specific prefix, such as user:1 in this case, to perform operations on related data.

Code Examples

Golang's go-redis client provides powerful commands to interact with Redis. The Keys command gets all keys matching a pattern.

package main import ( "" "context" ) func main() { rdb := redis.NewClient(&redis.Options{ Addr: "localhost:6379", Password: "", // no password set DB: 0, // use default DB }) ctx := context.Background() // Get all keys starting with 'user:1' result, err := rdb.Keys(ctx, "user:1*").Result() if err != nil { panic(err) } for _, key := range result { fmt.Println(key) } }

This code connects to a local Redis instance, and retrieves all keys starting with user:1. Please replace "user:1" with the actual prefix you are using.

Best Practices

  • Avoid using the Keys command in production environments for large databases because it may degrade performance. Use Scan instead.
  • Always handle errors returned from Redis commands.

Common Mistakes

  • Overusing the Keys command in production which could lead to performance issues.
  • Not handling potential errors when executing Redis commands.


Q: Can I use this method to get keys using other patterns, not just prefixes? A: Yes, the pattern argument in the Keys can be any glob-style pattern supported by Redis.

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Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.