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Aphelo – A Redis-like store in C++ with Progressive Rehashing

Aphelo – A Redis-like store in C++ with Progressive Rehashing

by pranit_garje·Apr 1, 2026·5 points·1 comment

AI Analysis

●●SolidBig BrainNiche Gem

Progressive rehashing kills 200ms pauses, but Redis already does this.

Strengths
  • Distributes O(N) resize work across operations instead of blocking hot path
  • Clear architecture diagrams showing dual-table migration strategy
  • Educational deep-dive on hash table internals most tutorials skip
Weaknesses
  • Redis implements progressive rehashing already with production battle-testing
  • No production benchmarks or clear advantage over established tools
Target Audience

Systems programmers, backend developers building databases

Similar To

Redis · Memcached · KeyDB

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