Download mulsze.php (chb)

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chb Overview

Lightweight on-disk hash table for fast key-value storage in pure PHP

CHB (Colony Hash Bucket) is a lightweight on-disk hash table designed for simplicity, predictability, and fast key-value lookups. Data is organized into a fixed-size bucket directory that maps hash values to chains of records stored in a compact append-only area.
Each record contains a pointer to the next record in the chain, a key-length field with deletion flag support, and a fixed-size payload area. Bucket count and record size are configurable at file creation time, allowing CHB to be tuned for different workloads while preserving a simple and deterministic layout.
The format is page-oriented (4 KiB aligned), easy to inspect, recover, and implement, requiring no complex trees, transactions, or variable-length record management. Deleted records can be recycled within their bucket chains, reducing fragmentation without introducing free-list complexity.
CHB is ideal for caches, kv stores, indexes where low implementation complexity is more important than full database features.

Additional Details for chb

Operating Systems

Linux, Mac, Windows

Intended Audience

Developers

Programming Language

PHP

Registered

2026-07-05

Last Updated

2026-07-26

Maintainers

lanky79

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chb

Lightweight on-disk hash table for fast key-value storage in pure PHP

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Additional Details for chb

Operating Systems

Intended Audience

Programming Language

Registered

Last Updated

Categories

Maintainers

Keep Me Updated!