feat: add streaming mode for prefix analysis (constant memory)#64
Merged
HDT3213 merged 3 commits intoHDT3213:masterfrom Apr 18, 2026
Merged
feat: add streaming mode for prefix analysis (constant memory)#64HDT3213 merged 3 commits intoHDT3213:masterfrom
HDT3213 merged 3 commits intoHDT3213:masterfrom
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The existing prefix command builds a full radix tree in memory, which OOMs on large RDB files. This adds a -streaming flag that uses a flat map[prefix]stats instead, keeping memory usage constant regardless of dump size. Usage: rdb -c prefix -streaming -max-depth 3 -prefix-sep ":" dump.rdb
- Only emit prefix entries where depth < segment count, preventing full keys from being stored as individual "prefixes" (23M -> 2.5K entries) - Add -track-mem flag to print heap/sys stats to stderr every 1M keys - Result: 132M keys / 55GB RDB parsed with ~87MB total memory
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The existing prefix command builds a full radix tree in memory, which OOMs on large RDB files. This adds a -streaming flag that uses a flat map[prefix]stats instead, keeping memory usage constant regardless of dump size.
Usage: rdb -c prefix -streaming -max-depth 3 -prefix-sep ":" dump.rdb
Result: 132M keys / 55GB RDB parsed with ~87MB total memory