redis-keys-statistics is a Java tool, designed for analyzing and reporting key usage statistics in Redis databases with exceptional speed and efficiency. By leveraging Lua scripting to reduce network I/O, it dramatically outperforms other open-source tools — tasks that typically take hours are completed in just minutes.
High Performance: Utilizes Lua scripting to minimize network I/O, delivering results significantly faster than traditional methods. Where some tools might take hours, redis-keys-statistics can complete the same task in a fraction of the time. Efficient Key Scanning: Uses the Redis SCAN command for batch scanning of keys, further optimizing performance. Memory Usage Statistics: Reports memory usage for keys in various units (B, KB, MB, GB). Top N Largest Keys: Quickly identifies the largest keys for memory optimization. Key Count by Type: Provides a breakdown of keys by type for better data structure insights. Prefix-Based Analysis: Analyzes keys based on prefixes to understand namespace usage. Cluster Support: Compatible with Redis clusters, including replica-only analysis. Readable Output: Formatted and easy-to-read statistical tables using prettytable.
+-------------------+------+---------+------------+-------+
| Key | Type | Size | Size Ratio | TTL |
+-------------------+------+---------+------------+-------+
| user_sessions:123 | hash | 1.2 MB | 150% ↑ | 360 |
| cache:page:001 | zset | 900 KB | 120% ↑ | -1 |
| config:app | hash | 800 KB | 100% ↑ | 86400 |
| queue:jobs | list | 600 KB | 80% ↑ | -1 |
| temp:data:456 | set | 500 KB | 60% ↑ | 1800 |
| ... | ... | ... | ... | ... |
+-------------------+------+---------+------------+-------+
+--------+-------+
| Type | Count |
+--------+-------+
| hash | 250 |
| zset | 150 |
| list | 100 |
| set | 75 |
| string | 200 |
+--------+-------+
+-------------+-------+--------------+---------+-----------------+
| Prefix Name | Count | Average Size | Max TTL | Types |
+-------------+-------+--------------+---------+-----------------+
| user | 100 | 200 KB | 3600 | - Type: hash |
| | | | | Count: 50 |
| | | | | - Type: string |
| | | | | Count: 50 |
| cache | 80 | 150 KB | -1 | - Type: zset |
| | | | | Count: 80 |
| config | 20 | 100 KB | 86400 | - Type: hash |
| | | | | Count: 20 |
| temp | 150 | 50 KB | 1800 | - Type: set |
| | | | | Count: 100 |
| | | | | - Type: list |
| | | | | Count: 50 |
+-------------+-------+--------------+---------+-----------------+
Contributions are welcome..!