## About the changes
Currently, if a PR is open and a push happens, the **e2e:frontend**
workflow will start running. If, shortly after a subsequent push on the
*same* PR happens, the workflow will start running again without
cancelling the previous (now obsolete) run. With these changes, the
first run would be cancelled, thus **saving compute resources** (see
below for quantity) that can be used to **speed up your overall CI/CD**,
without sacrificing functionality, since the second run will contain the
changes from the first push as well. 🌱
### Example
Here is an example of the behaviour described above: the commit
`b1b2e61` triggered
[this](https://github.com/Unleash/unleash/actions/runs/14493085673/)
workflow run, and shortly after the commit `9997fe1`, that happened on
top of the first commit, triggered
[this](https://github.com/Unleash/unleash/actions/runs/14493089012/)
workflow. Both workflows ran till the end, spending approximately 8 CPU
minutes each. With the proposed changes, the first run would be
cancelled, hence saving ~8 CPU minutes and clearing the queue for other
workflows. Note that this is an example of a single concurrent run; the
accumulated gain for all PRs would be higher, with a lower estimate at
**2 CPU hours** over the last few months.
The same holds for these workflow(s) as well: Dependency review, PR ->
Build Docs.
### Context
Hi,
We are a team of [researchers](https://www.ifi.uzh.ch/en/zest.html) from
University of Zurich and we are currently working on energy
optimizations in GitHub Actions workflows.
Kindly let us know (here or in the email below) if you would like more
details, if you want to reject the proposed changes for other reasons,
or if you have any question whatsoever.
Best regards,
[Konstantinos
Kitsios](https://www.ifi.uzh.ch/en/zest/team/konstantinos_kitsios.html)
konstantinos.kitsios@uzh.ch
This PR adds some troubleshooting information to the website readme and
also makes it so that we get more readable errors in the build logs when
something goes wrong.
Add a new .../:feature/variants API
This adds
- `GET /api/admin/projects/:projectId/features/:featureName/variants` which returns
```json
{ version: '1', variants: IVariant[] }
```
- `PATCH /api/admin/projects/:projectId/features/:featureName/variants` which accepts a json patch set and updates the feature's variants field and then returns
```json
{ version: '1', variants: IVariant[] }
```
- `PUT /api/admin/projects/:projectId/features/:featureName/variants`
which accepts a IVariant[] and overwrites the current variants list for the feature defined in :featureName and returns
```json
{ version: '1', variants: IVariant[] }
- This also makes sure the total weight of all variants is == 1000
- Validates that there is at least 1 'variable' variant if there are variants
- Validates that 'fix' variants total weight can't exceed 1000
- Adds tests for all these invariants.
Co-authored-by: Simon Hornby <simon@getunleash.ai>
