# vk-com/kphp-kdb

VK-KittenPHP/DB/Engine suite

Repository: https://github.com/vk-com/kphp-kdb
Canonical: https://ross.abutalabs.com/products/kphp-kdb
Language: C
License: GPL-2.0
License Family: copyleft
Last push: 2019-02-09T11:26:03+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4579, "days_push": 2762, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6067, forks 214 (observed 2026-08-28T04:09:34.749854+00:00)

## What it is
VK's KittenPHP/DB/Engine suite: a PHP-to-C++ translating compiler (KPHP) plus a set of specialized high-performance non-relational database engines developed at VKontakte since 2009. It is battle-tested in VK's high-load production environment and released under GPL-2.0/LGPL.

## Use cases
- compile PHP code to fast native C++ binaries
- run high-throughput backend services for social networks
- deploy specialized key-value and non-relational storage engines
- speed up a large legacy PHP codebase
- study production-grade PHP compiler and storage engine internals

## When to choose
- you operate very high-load PHP services and want native-speed execution
- you need VK-proven specialized storage engines
- you want to learn from a real-world PHP-to-C++ compiler

## When to avoid
- you need modern KPHP development - it moved to the separate vkcom/kphp repository
- you need English documentation - only Russian docs are provided
- you want a general-purpose relational database or a typical PHP framework
- you need active community support or recent releases

## Facets
- artifact type: framework
- maturity: maintenance
- function: compiler, database, web-framework, http-server, caching
- domain: backend, databases, developer-tools, performance, web-development
- platform: cpp, c, self-hosted
- tags: kphp, php-to-c-transpiler, vk, high-performance, non-relational-database, social-network-infrastructure, linux

## Member repositories
- vk-com/kphp-kdb (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:34.749854+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:48:43.122554+00:00, confidence not recorded.
  - readme: https://github.com/vk-com/kphp-kdb (fetched 2026-08-28T04:09:34.749854+00:00, sha 184b1dd37ea6)
- Data as of 2026-08-30T08:39:29.467469+00:00.