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yq-DB

A single-file embedded key-value store in pure C11

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yq-DB is a single-file, zero-dependency embedded key-value store written in C11. Copy-on-write B+Tree, commit-first WAL with CRC32C, MVCC snapshot reads, staged transactions and crash recovery. 142M ops/s full scan. Apache-2.0.

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PH · launched Oct 13, 2026 · 1 upvote (top 67%)

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Could you build this?

No Writing a zero-dependency, crash-resilient C11 embedded database with MVCC, copy-on-write B+Trees, and WAL logging requires specialized systems programming and storage engine verification.

What it would actually take: Requires advanced systems programming in C11 implementing memory-mapped file I/O, concurrent data structures, write-ahead logging with CRC checksums, and formal crash consistency testing (Jepsen-style power-failure tests). Ensuring memory safety, 142M ops/s throughput, and zero data corruption requires deep database internals expertise.

Competitors

Other products that read as similar to this one : 129 launches clear the similarity bar, closest 8 shown.

Attention rank: #78 of 130 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 346 days after the earliest competitor.

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