Files
rustfs/rustfs
houseme b604074217 perf(object-data-cache): take fill off the GET path and fix the metrics (#4678)
* fix(object-data-cache): make cache metrics one-increment-per-GET

Rework the object data cache observability so each counter carries one
clear meaning, and drop dead per-entry state.

ODC-17 (backlog#1122): split requests_total, which was incremented by
both plan_get and lookup_body, into plan_total{decision,reason,size_class}
(emitted only by plan_get) and lookup_total{result,size_class} (emitted
only by lookup_body). Each is now incremented exactly once per GET per
layer; help text states this.

ODC-18 (backlog#1123): add a JoinedInflightFill result (label
joined_inflight) so a singleflight waiter is no longer counted as an
insert. record_fill_result now always counts the outcome but records
fill bytes only when non-zero and the duration histogram only when
present, so joined_inflight / skipped_by_mode / skipped_size_mismatch
no longer inflate fill_bytes_total or add non-fill duration samples.
The waiter->JoinedInflightFill mapping lives in MokaBackend (owned by a
concurrent branch); cache.rs handles the variant already.

ODC-29 (backlog#1134): stop refreshing the cache-state gauge on every
lookup, and debounce it on fill/invalidate to at most once per second
via an AtomicU64 millis timestamp, since moka's entry_count is a
settling approximation.

ODC-36 (backlog#1141): give invalidations_total an outcome label
(removed|noop) and skip the gauge refresh on the no-op path. Extend
ObjectDataCacheInvalidationResult with Removed{keys}/NoOp (Success kept
as a transitional variant until MokaBackend reports the removal count);
NoopBackend now reports NoOp.

ODC-30 (backlog#1141): drop the dead content_length/etag/inserted_at
fields (and getters) from ObjectDataCacheEntry, which are redundant with
the moka key identity; the constructor keeps its arity so the
out-of-scope MokaBackend caller still compiles. Gate is_null_version
behind cfg(test).

Tests use a thread-local metrics recorder to avoid the global-singleton
flakiness. Fill-enabled test configs set min_free_memory_percent=0 so
the cgroup gate does not refuse fills in CI pods.

Co-Authored-By: heihutu <heihutu@gmail.com>

* fix(object-data-cache): move fill off GET path, bound & harden the fill

Implements five object-data-cache audit findings.

ODC-15 (backlog#1120): the GET response no longer blocks on cache fill.
The buffered/materialized body is already in hand, so the fill now runs
in a detached task and the response is built immediately. Singleflight is
made non-blocking: `try_acquire` returns Leader or Busy, and a non-leader
skips its own fill (SkippedSingleflightBusy) instead of waiting on another
request's leader. The inner fill spawn is KEPT: once the index key is
registered, the recheck/undo must complete even if the enclosing fill
future is aborted, so removing it would weaken the cancellation-safety
guarantee (ODC-13 test) and the invalidation-race undo.

ODC-11 (backlog#1116): enforce the fill-concurrency knobs. MokaBackend
now holds a Semaphore sized min(per_cpu * parallelism, max), acquired
after winning leadership and before the memory gate. On saturation it
rejects (try_acquire_owned) with SkippedFillConcurrency rather than
queueing, so the fill path never reintroduces GET-latency coupling.

ODC-14 (backlog#1119): the memory gate no longer does a blocking sysinfo
refresh under a mutex on the async fill path. A dedicated periodic
refresher (tokio interval + spawn_blocking) updates an atomic snapshot
every 5s; allows_fill is now lock-free. The min_free_memory_percent == 0
short-circuit still runs before any snapshot read. No runtime at
construction (sync unit tests) simply keeps the seed snapshot.

ODC-32 (backlog#1137): singleflight no longer emits metrics while holding
the map mutex. try_acquire/remove_entry capture the map length under the
guard, drop it, then emit the gauge/counter.

ODC-07 (backlog#1112): the materialize read is bounded via
take(capacity + 1) so an over-long stream cannot grow the buffer past the
in-memory GET threshold, and any length mismatch is now a hard error
matching the direct-memory GET path, instead of warn-and-serve.

cache.rs is owned by a concurrent branch; this commit only appends the
SkippedFillConcurrency and SkippedSingleflightBusy variants + label arms.

Co-Authored-By: heihutu <heihutu@gmail.com>

* fix(object-data-cache): report JoinedInflightFill and invalidation outcome

Reconciles the moka_backend half of two metrics-semantics findings after
merging fix/odc-metrics-semantics (which landed the cache.rs half).

ODC-18 (backlog#1123): the singleflight non-leader path now returns
JoinedInflightFill instead of counting as an insert, so N concurrent GETs
of one cold key record one insert, not N. This composes with the ODC-15
redesign: the non-leader does NOT wait for the leader (it already owns the
body and never re-serves from the fill result), so no blocking wait is
reintroduced. Drops the redundant local SkippedSingleflightBusy variant in
favor of the canonical JoinedInflightFill (mapped to no bytes / no duration
by the facade). SkippedFillConcurrency (ODC-11) is retained.

ODC-36 (backlog#1141): MokaBackend::invalidate_object now returns
Removed { keys } / NoOp instead of the transitional Success, so the facade
labels invalidations_total{outcome=removed|noop} and skips the cache-state
gauge refresh on the no-op path.

Tests: duplicate-fill test asserts JoinedInflightFill (bites when reverted
to Inserted); new no-op invalidation test; matching-identity test asserts
Removed { keys: 1 }.

Co-Authored-By: heihutu <heihutu@gmail.com>

* fix(object-data-cache): drop unused mut on materialize stream binding

The ODC-07 change moves `final_stream` into `AsyncReadExt::take`, so the
`build_get_object_body_with_cache` parameter is no longer mutated in place.

Co-Authored-By: heihutu <heihutu@gmail.com>

* refactor(object-data-cache): close the cross-branch coordination seams

Merging the metrics and hot-path branches left four transitional shims that
only existed because each side could not edit the other's files. With both
sides present they are dead weight, and two of them actively misreport.

- ObjectDataCacheEntry::new took content_length and etag only to keep the
  caller in moka_backend.rs compiling, then discarded both. Drop them; the
  entry is a Bytes wrapper and the caller now passes only the body.

- SkippedSingleflightClosed lost its only producer when the waiter model was
  replaced by Leader/Busy election. Remove the variant.

- The fill-accounting match ended in a wildcard that charged fill_bytes and a
  duration to every non-Inserted outcome, so a fill rejected by the memory
  gate or the concurrency semaphore — which never touched the backend and
  wrote nothing — still inflated fill_bytes_total. Enumerate every variant
  explicitly: only outcomes that wrote the body report bytes and duration.
  Exhaustiveness also forces a future variant to state its accounting rather
  than inherit a wrong default.

- InvalidationResult::Success mapped a no-op to outcome=removed, the exact lie
  backlog#1141 set out to fix, and its doc comment claimed MokaBackend still
  returned it after that backend had been widened. It has no producer left.
  Remove it, and tighten the app-layer test from "any successful variant" to
  the real contract: the pre-mutation call reports Removed{keys:1}, the
  post-delete call NoOp.

Refs: backlog#1123, backlog#1141, backlog#1135

Co-Authored-By: heihutu <heihutu@gmail.com>

---------

Co-authored-by: heihutu <heihutu@gmail.com>
2026-07-10 12:25:23 +00:00
..
2025-05-29 06:53:11 +00:00

RustFS

RustFS is a high-performance distributed object storage software built using Rust

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Getting Started · Docs · Bug reports · Discussions

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RustFS is a high-performance distributed object storage software built using Rust, one of the most popular languages worldwide. Along with MinIO, it shares a range of advantages such as simplicity, broad S3 API compatibility for supported features, open-source nature, support for data lakes, AI, and big data. Furthermore, it has a better and more user-friendly open-source license in comparison to other storage systems, being constructed under the Apache license. As Rust serves as its foundation, RustFS provides faster speed and safer distributed features for high-performance object storage.

Features

  • High Performance: Built with Rust, ensuring speed and efficiency.
  • Distributed Architecture: Scalable and fault-tolerant design for large-scale deployments.
  • S3 Compatibility: Integration with common S3-compatible applications; current coverage is tracked in the S3 compatibility matrix.
  • Data Lake Support: Optimized for big data and AI workloads.
  • Open Source: Licensed under Apache 2.0, encouraging community contributions and transparency.
  • User-Friendly: Designed with simplicity in mind, making it easy to deploy and manage.

RustFS vs MinIO

Stress test server parameters

Type parameter Remark
CPU 2 Core Intel Xeon(Sapphire Rapids) Platinum 8475B , 2.7/3.2 GHz
Memory 4GB  
Network 15Gbp  
Driver 40GB x 4 IOPS 3800 / Driver

https://github.com/user-attachments/assets/2e4979b5-260c-4f2c-ac12-c87fd558072a

RustFS vs Other object storage

RustFS Other object storage
Powerful Console Simple and useless Console
Developed based on Rust language, memory is safer Developed in Go or C, with potential issues like memory GC/leaks
Does not report logs to third-party countries Reporting logs to other third countries may violate national security laws
Licensed under Apache, more business-friendly AGPL V3 License and other License, polluted open source and License traps, infringement of intellectual property rights
S3-compatible core, with coverage tracked in the compatibility matrix Variable S3 support and local cloud vendor coverage
Rust-based development, strong support for secure and innovative devices Poor support for edge gateways and secure innovative devices
Stable commercial prices, free community support High pricing, with costs up to $250,000 for 1PiB
No risk Intellectual property risks and risks of prohibited uses

Quickstart

To get started with RustFS, follow these steps:

  1. One-click installation script (Option 1)

    curl -O  https://rustfs.com/install_rustfs.sh && bash install_rustfs.sh
    
  2. Docker Quick Start (Option 2)

 # Docker Hub (recommended)
 docker run -d -p 9000:9000 -v /data:/data rustfs/rustfs:latest

 # Alternative using Podman
 podman run -d -p 9000:9000 -v /data:/data rustfs/rustfs:latest
  1. Access the Console: Open your web browser and navigate to http://localhost:9001 to access the RustFS console, default username and password is rustfsadmin .
  2. Create a Bucket: Use the console to create a new bucket for your objects.
  3. Upload Objects: You can upload files directly through the console or use S3-compatible APIs to interact with your RustFS instance.

Documentation

For detailed documentation, including configuration options, API references, and advanced usage, please visit our Documentation.

Getting Help

If you have any questions or need assistance, you can:

  • Check the FAQ for common issues and solutions.
  • Join our GitHub Discussions to ask questions and share your experiences.
  • Open an issue on our GitHub Issues page for bug reports or feature requests.

Contact

Contributors

RustFS is a community-driven project, and we appreciate all contributions. Check out the Contributors page to see the amazing people who have helped make RustFS better.

License

Apache 2.0

RustFS is a trademark of RustFS, Inc. All other trademarks are the property of their respective owners.