facebookarchive/flashcache

Health v2 · maintenance only

Flags: archived

Adoption not part of the score

1601 stars · 410 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Flashcache is a Linux kernel module (device-mapper target) that provides a general-purpose write-back block cache, using an SSD to cache reads and writes for slower block devices. It was originally developed at Facebook and is now archived and unmaintained.

Use cases

• speed up disk-backed databases with an SSD write-back cache
• cache a slow spinning disk with an SSD on Linux
• reduce write latency for MySQL or other storage workloads
• create a device-mapper cached block volume
• add a write-through SSD cache layer for block devices

When to choose

• you must maintain a legacy Linux 2.6-era system already using flashcache
• you need a GPL-2.0 write-back block cache and accept unmaintained code

When to avoid

• you need actively maintained software
• you run modern kernels (use bcache, lvmcache, or dm-cache instead)
• you need filesystem-level or distributed caching rather than block-level

Facets

library · maturity abandoned

caching file-system databases performance operating-systems c block-cache write-back kernel-module dm-target ssd-cache archived linux

Member repositories

For agents

markdown · JSON · MCP: product_card(name="facebookarchive/flashcache")