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# What does this PR do?
feat(quota): add server‑side per‑client request quotas (requires auth)
Unrestricted usage can lead to runaway costs and fragmented client-side
workarounds. This commit introduces a native quota mechanism to the
server, giving operators a unified, centrally managed throttle for
per-client requests—without needing extra proxies or custom client
logic. This helps contain cloud-compute expenses, enables fine-grained
usage control, and simplifies deployment and monitoring of Llama Stack
services. Quotas are fully opt-in and have no effect unless explicitly
configured.
Notice that Quotas are fully opt-in and require authentication to be
enabled. The 'sqlite' is the only supported quota `type` at this time,
any other `type` will be rejected. And the only supported `period` is
'day'.
Highlights:
- Adds `QuotaMiddleware` to enforce per-client request quotas:
- Uses `Authorization: Bearer <client_id>` (from
AuthenticationMiddleware)
- Tracks usage via a SQLite-based KV store
- Returns 429 when the quota is exceeded
- Extends `ServerConfig` with a `quota` section (type + config)
- Enforces strict coupling: quotas require authentication or the server
will fail to start
Behavior changes:
- Quotas are disabled by default unless explicitly configured
- SQLite defaults to `./quotas.db` if no DB path is set
- The server requires authentication when quotas are enabled
To enable per-client request quotas in `run.yaml`, add:
```
server:
port: 8321
auth:
provider_type: "custom"
config:
endpoint: "https://auth.example.com/validate"
quota:
type: sqlite
config:
db_path: ./quotas.db
limit:
max_requests: 1000
period: day
[//]: # (If resolving an issue, uncomment and update the line below)
Closes #2093
## Test Plan
[Describe the tests you ran to verify your changes with result
summaries. *Provide clear instructions so the plan can be easily
re-executed.*]
[//]: # (## Documentation)
Signed-off-by: Wen Liang <wenliang@redhat.com>
Co-authored-by: Wen Liang <wenliang@redhat.com>
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| .. | ||
| _static | ||
| notebooks | ||
| openapi_generator | ||
| resources | ||
| source | ||
| zero_to_hero_guide | ||
| conftest.py | ||
| contbuild.sh | ||
| dog.jpg | ||
| getting_started.ipynb | ||
| getting_started_llama4.ipynb | ||
| getting_started_llama_api.ipynb | ||
| license_header.txt | ||
| make.bat | ||
| Makefile | ||
| readme.md | ||
| requirements.txt | ||
Llama Stack Documentation
Here's a collection of comprehensive guides, examples, and resources for building AI applications with Llama Stack. For the complete documentation, visit our ReadTheDocs page.
Render locally
pip install -r requirements.txt
cd docs
python -m sphinx_autobuild source _build
You can open up the docs in your browser at http://localhost:8000
Content
Try out Llama Stack's capabilities through our detailed Jupyter notebooks:
- Building AI Applications Notebook - A comprehensive guide to building production-ready AI applications using Llama Stack
- Benchmark Evaluations Notebook - Detailed performance evaluations and benchmarking results
- Zero-to-Hero Guide - Step-by-step guide for getting started with Llama Stack