[new-product] Add Memcached (#4112)

Closes #4111.

---------

Co-authored-by: Marc Wrobel <[email protected]>

products/memcached.md

@@ -0,0 +1,52 @@
+---
+title: Memcached
+category: db
+permalink: /memcached
+versionCommand: memcached -h
+changelogTemplate: "https://github.com/memcached/memcached/wiki/ReleaseNotes{{'__LATEST__'|replace:'.',''}}"
+releaseDateColumn: true
+
+identifiers:
+-   purl: pkg:generic/memcached
+-   purl: pkg:deb/ubuntu/memcached
+-   purl: pkg:deb/debian/memcached
+-   purl: pkg:rpm/amzn/memcached
+-   purl: pkg:rpm/redhat/memcached
+-   purl: pkg:rpm/centos/memcached
+-   purl: pkg:docker/library/memcached
+-   repology: memcached
+
+auto:
+-   git: https://github.com/memcached/memcached.git
+
+# eol(x) = releaseDate(x+1)
+releases:
+-   releaseCycle: "1.6"
+    releaseDate: 2020-03-09
+    eol: false
+    latest: '1.6.22'
+    latestReleaseDate: 2023-10-09
+
+-   releaseCycle: "1.5"
+    releaseDate: 2017-07-21
+    eol: 2020-03-09
+    latest: '1.5.22'
+    latestReleaseDate: 2020-02-01
+
+-   releaseCycle: "1.4"
+    releaseDate: 2009-07-09
+    eol: 2017-07-21
+    latest: '1.4.39'
+    latestReleaseDate: 2017-07-04
+
+---
+
+> [Memcached](https://www.memcached.org/) is a free and open source, high-performance, distributed
+> memory object caching system, generic in nature, but intended for use in speeding up dynamic web
+> applications by alleviating database load. Memcached is an in-memory key-value store for small
+> chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page
+> rendering.
+
+Memcached is community-supported, and doesn't have a clearly defined release and support policy.
+[Based on the latest releases](https://github.com/memcached/memcached/wiki/ReleaseNotes), it
+appears that only the latest release is supported.