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diff --git a/docs/content/doc/packages/storage.en-us.md b/docs/content/doc/packages/storage.en-us.md new file mode 100644 index 0000000000..c922496a99 --- /dev/null +++ b/docs/content/doc/packages/storage.en-us.md @@ -0,0 +1,84 @@ +--- +date: "2022-11-01T00:00:00+00:00" +title: "Storage" +slug: "packages/storage" +draft: false +toc: false +menu: + sidebar: + parent: "packages" + name: "storage" + weight: 5 + identifier: "storage" +--- + +# Storage + +This document describes the storage of the package registry and how it can be managed. + +**Table of Contents** + +{{< toc >}} + +## Deduplication + +The package registry has a build-in deduplication of uploaded blobs. +If two identical files are uploaded only one blob is saved on the filesystem. +This ensures no space is wasted for duplicated files. + +If two packages are uploaded with identical files, both packages will display the same size but on the filesystem they require only half of the size. +Whenever a package gets deleted only the references to the underlaying blobs are removed. +The blobs get not removed at this moment, so they still require space on the filesystem. +When a new package gets uploaded the existing blobs may get referenced again. + +These unreferenced blobs get deleted by a [clean up job]({{< relref "doc/advanced/config-cheat-sheet.en-us.md#cron---cleanup-expired-packages-croncleanup_packages" >}}). +The config setting `OLDER_THAN` configures how long unreferenced blobs are kept before they get deleted. + +## Cleanup Rules + +Package registries can become large over time without cleanup. +It's recommended to delete unnecessary packages and set up cleanup rules to automatically manage the package registry usage. +Every package owner (user or organization) manages the cleanup rules which are applied to their packages. + +|Setting|Description| +|-|-| +|Enabled|Turn the cleanup rule on or off.| +|Type|Every rule manages a specific package type.| +|Apply pattern to full package name|If enabled, the patterns below are applied to the full package name (`package/version`). Otherwise only the version (`version`) is used.| +|Keep the most recent|How many versions to *always* keep for each package.| +|Keep versions matching|The regex pattern that determines which versions to keep. An empty pattern keeps no version while `.+` keeps all versions. The container registry will always keep the `latest` version even if not configured.| +|Remove versions older than|Remove only versions older than the selected days.| +|Remove versions matching|The regex pattern that determines which versions to remove. An empty pattern or `.+` leads to the removal of every package if no other setting tells otherwise.| + +Every cleanup rule can show a preview of the affected packages. +This can be used to check if the cleanup rules is proper configured. + +### Regex examples + +Regex patterns are automatically surrounded with `\A` and `\z` anchors. +Do not include any `\A`, `\z`, `^` or `$` token in the regex patterns as they are not necessary. +The patterns are case-insensitive which matches the behaviour of the package registry in Gitea. + +|Pattern|Description| +|-|-| +|`.*`|Match every possible version.| +|`v.+`|Match versions that start with `v`.| +|`release`|Match only the version `release`.| +|`release.*`|Match versions that are either named or start with `release`.| +|`.+-temp-.+`|Match versions that contain `-temp-`.| +|`v.+\|release`|Match versions that either start with `v` or are named `release`.| +|`package/v.+\|other/release`|Match versions of the package `package` that start with `v` or the version `release` of the package `other`. This needs the setting *Apply pattern to full package name* enabled.| + +### How the cleanup rules work + +The cleanup rules are part of the [clean up job]({{< relref "doc/advanced/config-cheat-sheet.en-us.md#cron---cleanup-expired-packages-croncleanup_packages" >}}) and run periodicly. + +The cleanup rule: + +1. Collects all packages of the package type for the owners registry. +1. For every package it collects all versions. +1. Excludes from the list the # versions based on the *Keep the most recent* value. +1. Excludes from the list any versions matching the *Keep versions matching* value. +1. Excludes from the list the versions more recent than the *Remove versions older than* value. +1. Excludes from the list any versions not matching the *Remove versions matching* value. +1. Deletes the remaining versions. |