Sync performance: skip /tags/list for specific tag lists
Nobody has claimed this yet.
- Dominant language
- Python
- Stars
- 31
- Forks
- 56
- Avg merge
- 2d 22h
- Merged PRs (30d)
- 22
Description
Problem: Syncing container repositories with specific tag references (sha256 digests)
from deep repositories (50,000+ tags) requires paginating through all tags, taking 3-8 minutes.
Solution: When include_tags contains only non-wildcard references and excludes won't match,
bypass /tags/list entirely and fetch manifests directly. Discover cosign companions via HEAD probing.
Impact: Reduces sync time from 3-8 minutes to ~20 seconds for the reported use case
(OCP repository with 50K+ tags, syncing 189 specific digests).
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the container sync handling for include_tags and the /tags/list request. Trace how specific digest references and cosign companions are processed, then verify the sync path avoids tag-list pagination and completes the reported repository case within the expected behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend
- Issue type
- Refactor
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 55/100