readystack/memcached repository overview

⁠memcached

readystack/memcached:1.6.45-CE-ubuntu24.04-r4

Source, recipe and records

• Source and build recipe: https://readystack.dev/products/memcached/recipe⁠
• Upstream source at this release's pinned commit (1.6.45): https://github.com/memcached/memcached/tree/2d51e364799bc9698bd4b11728ea978cea12da6e⁠
• Product page: https://readystack.dev/products/memcached⁠
• Hermetic Build Kit for this release (free with an account): https://readystack.dev/products/memcached⁠
• Release history (JSON): https://readystack.dev/api/releases/memcached⁠
• Defect record: https://readystack.dev/defects.html?product=memcached⁠
• Today's scan: https://readystack.dev/products/memcached#pp-grade⁠
• Report an issue: https://github.com/ReadyStackFree/readystack/issues/new?template=bug.yml&product=memcached⁠
• Signing key (cosign): https://readystack.dev/keys/cosign.pub⁠

A cosign-signed build of github.com/memcached/memcached 1.6.45 (BSD-3-Clause), built clean-room from official upstream source by ReadyStack⁠.

⁠What you get

Signature, user and attestations below were measured on the published digest sha256:12f4332eb550d743472db0c952a1cc184261aea704ddc806eb51083b03feed40 on 2026-11-12.

• Scan scores — we scan every image we publish every day (an SBOM made with syft, vulnerabilities matched with grype, scored with cerodeo-v2, ce.rodeo's current rubric; scans before 2026-11-08 used cerodeo-v1) and record each scan with how its score was derived. This release's first and latest scan: https://readystack.dev/products/memcached⁠
• ReadyStack release check — passed at release on 2026-11-12: no fixable critical or high vulnerability (Docker Scout and OSV), a non-root user, SBOM and provenance attached. This is ReadyStack's own test, not a Docker grade; vulnerabilities published since then are in today's result at https://readystack.dev/queue⁠.
• Signed — cosign signature by the ReadyStack release key (fingerprint 04daa92344a52dbc) on this release's index digest sha256:12f4332eb550d743472db0c952a1cc184261aea704ddc806eb51083b03feed40; verify with cosign verify --key https://readystack.dev/keys/cosign.pub readystack/memcached:1.6.45-CE-ubuntu24.04-r4.
• Attestations — An SPDX SBOM and SLSA v1 build provenance are attached to this digest.
• Runs as a non-root user (memcache).
• Built from source by ReadyStack.

⁠Which tag should I pull?

This image follows the ReadyStack release-tag convention:

• The current release is 1.6.45-CE-ubuntu24.04-r4 — the release listed at readystack.dev. Release tags use the pattern <upstream-version>-CE-<base-os>-r<N>; the current one is signed, attested (SBOM + provenance), and is provided under the ReadyStack Agreement⁠.

• Earlier release tags (an older version or revision in the same pattern) are superseded. They stay pullable so existing deployments can pin them, but they are no longer re-graded, and fixes appear only in newer releases: move to the current release. For a superseded release's build kit, ask support.

• Release tags never move, so pulling the same tag again never changes the image. To be offered each new release automatically (a new revision r<N+1>, or a new upstream version), use the ReadyStack Renovate preset: https://readystack.dev/updates.html⁠

• Any tag beginning with internal- is an engineering-pipeline artifact published for build observability. It is unsupported, may change or disappear without notice, and must not be used in production.

# ✓ current release
docker pull readystack/memcached:1.6.45-CE-ubuntu24.04-r4

# ✗ unsupported (do not pull)
docker pull readystack/memcached:internal-...

This release is signed; verify it with cosign verify --key https://readystack.dev/keys/cosign.pub readystack/memcached:1.6.45-CE-ubuntu24.04-r4 (the signature is recorded in the public Sigstore transparency log). Support: [email protected]⁠, as set out in the ReadyStack Agreement⁠.

⁠Deployment

Single container, one memcached process compiled from source, in the foreground as PID 1 under the non-root user memcache. An in-memory key-value cache: items live in RAM only, nothing is written to disk, and a restart or re-create empties it. No database, no sidecar, no web UI, no HTTP API.

docker run -d --name memcached -p 127.0.0.1:11211:11211 readystack/memcached:1.6.45-CE-ubuntu24.04-r4 -m 1024

Arguments after the image name are memcached's own options (the entrypoint runs memcached with them): -m 1024 gives the cache 1024 MB of memory (64 MB by default). The command publishes port 11211 on the host's loopback address only, because memcached accepts every client without a password (see Access control); publish it on another address only on a private network. A restart empties the cache.

⁠The full ReadyStack Hermetic Build Kit

The complete --network=none build kit for this image — plus admin/DB/API handbooks, the build's validation records, and its build provenance records — is a free download for any registered account at readystack.dev/products/memcached⁠. A clean-room rebuild from this release's archive on an egress-blocked host reproduced its linux/amd64 digest sha256:46cbcae2746fce20626ed2a7bb6df0175d3be10bb1a0247257d81a95e68c8444 on 2026-11-12.

— ReadyStack · readystack.dev