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nats-io

28 indexed repositories · View on GitHub

nats-server
High-Performance server for NATS.io, the cloud and edge native messaging system.

Go · 20752 stars
nats.go
Golang client for NATS, the cloud native messaging system.

Go · 6753 stars
nats.rs
Rust client for NATS, the cloud native messaging system.

Rust · 1540 stars
nats.py
Python3 client for NATS

Python · 1250 stars
natscli
The NATS Command Line Interface

Go · 827 stars
nats.java
Java client for NATS

Java · 679 stars
k8s
NATS on Kubernetes with Helm Charts

Go · 656 stars
nats.c
A C client for NATS

C · 505 stars
prometheus-nats-exporter
A Prometheus exporter for NATS metrics

Go · 499 stars
nats.net
Async .NET client for NATS: pub/sub, request/reply, JetStream, KV, Object Store, Services

C# · 482 stars
nats.js
JavaScript client for Node.js, Bun, Deno and browser for NATS, the cloud native messaging system

TypeScript · 441 stars
nats-architecture-and-design
Architecture and Design Docs

Go · 433 stars
nats-surveyor
NATS Monitoring, Simplified.

Go · 330 stars
nats.ex
Elixir client for NATS, the cloud native messaging system. https://nats.io

Elixir · 279 stars
nack
NATS Controllers for Kubernetes (NACK)

Go · 253 stars
jsm.go
JetStream Management Library for Golang

Go · 189 stars
nats-docker
Official Docker image for the NATS server

Dockerfile · 169 stars
nats-pure.rb
Ruby client for NATS, the cloud native messaging system.

Ruby · 163 stars
nats-box
A container with NATS utilities

HCL · 156 stars
nats-site
Website content for https://nats.io. For technical issues with NATS products, please log an issue in the proper repository.

Markdown · 105 stars
8 more repositories live on View on GitHub

Beginner friendly Everything

Open All

JetStream: ~20s delivery delays through sourced streams after native pool-placement migration Open

defect

nats-io/nats-server#8619 · 1 comment · 1 assignee · Opened Sep 18, 2026
Stream sourcing throughput capped at ~20K msg/s by a single goroutine Open

proposal

Difficulty 5/5 Over a week Newbie friendliness 35/100

nats-io/nats-server#8612 · 1 comment · Opened Sep 17, 2026
MQTT topics with whitespace cause client disconnects Open

proposal

Difficulty 4/5 3-5 days Newbie friendliness 48/100

nats-io/nats-server#8611 · Opened Sep 17, 2026
Add non-throwing variants for service endpoint add/remove Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

nats-io/nats.net#1261 · Opened Sep 17, 2026
Jetstream: PATCH operation for adding a source to a stream Open

proposal

Difficulty 4/5 3-5 days Newbie friendliness 45/100

nats-io/nats-server#8607 · 6 comments · Opened Sep 16, 2026
Service StopAsync drops in-flight requests Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

nats-io/nats.net#1260 · Opened Sep 15, 2026
ADR-50 batch publish: JavaScript vs the open questions Open

nats-io/nats.js#434 · 1 assignee · Opened Sep 14, 2026
serverdata.CurrentActiveServers() should be domain aware Open

nats-io/jsm.go#850 · 1 assignee · Opened Sep 14, 2026
Discovery timeout to chanve severity level for route connections messages. Open

proposal

Difficulty 4/5 3-5 days Newbie friendliness 52/100

nats-io/nats-server#8596 · Opened Sep 13, 2026
ADR-50 behavior and implementation review Open

nats-io/nats-architecture-and-design#430 · 6 assignees · Opened Sep 12, 2026
Unbounded memory growth during a sustained outage Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

nats-io/nats.js#433 · Opened Sep 11, 2026
Add stream edit options to s restore Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

nats-io/natscli#1731 · Opened Sep 11, 2026
Support encrypting backups Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

nats-io/jsm.go#849 · Opened Sep 11, 2026
Add AsyncAuthenticator to support clients where DPoP is already provided as a Promise Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

nats-io/nats.js#432 · Opened Sep 10, 2026
ObjectStore getBlob/get stalls after 2MB (16 chunks) v3.4.0, Open

Difficulty 3/5 1-2 days Newbie friendliness 64/100

nats-io/nats.js#430 · Opened Sep 10, 2026
Memory leak in STATSZ on windows if the process cannot read performance counters Open

defect

Difficulty 2/5 1-3 hours Newbie friendliness 74/100

nats-io/nats-server#8588 · Opened Sep 10, 2026
KeyPair.Sign produces an invalid Ed25519 signature on the second call per request/scope Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

nats-io/nkeys.net#34 · 2 comments · 1 reaction · Opened Sep 10, 2026
Nats.py callout JWT expiry isn't properly handled Open

defect

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

nats-io/nats.py#1019 · 2 comments · Opened Sep 9, 2026
NatsHeaders is case-insensitive, but ADR-4 says client header operations should be case-sensitive Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

nats-io/nats.net#1257 · 1 comment · Opened Sep 8, 2026
Support domains in system accounts Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

nats-io/jsm.go#841 · Opened Sep 7, 2026
Issue CVE: CVE-2026-42764 Open

defect

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nats-io/nats-box#139 · Opened Sep 5, 2026
Cross-account import interest is permanently lost when an account is introduced by config reload in a cluster Open

defect

Difficulty 5/5 Over a week Newbie friendliness 38/100

nats-io/nats-server#8560 · 3 comments · Opened Sep 3, 2026
Consumers are collected with --no-consumers in audit gather Open

nats-io/jsm.go#835 · 1 assignee · Opened Sep 2, 2026
Sustained append-latency degradation on a full DiscardOld stream under concurrent filtered-consumer scans Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

nats-io/nats-server#8552 · Opened Sep 2, 2026
Allow removing endpoints from Services Open

Difficulty 4/5 3-5 days Newbie friendliness 72/100

nats-io/nats.net#1254 · Opened Sep 1, 2026
Flag `--raw` causes `{{Subject}}` to expand to an empty string when used with `--translate` Open

defect

nats-io/natscli#1714 · 1 assignee · Opened Sep 1, 2026
Receiving `ErrConnectionClosed` from `RequestWithContext` during a reconnect Open

defect

nats-io/nats.go#2128 · 1 assignee · Opened Sep 1, 2026
Re-host old docs site because the new one is difficult to find things in Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

nats-io/nats.docs.v2#87 · 1 comment · Opened Aug 31, 2026
Updating JS consumer fails when moving from `filter_subject` to `filter_subjects` Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

nats-io/nats.js#429 · Opened Aug 31, 2026
Documentation on protocol seems out of date and sometimes inconsistent Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

nats-io/nats-site#1102 · 1 comment · Opened Aug 30, 2026
Trojan Wacatec.B!ml detected by Windows Defender in nats-server-v2.14.6-windows-amd64.zip Open

defect

Difficulty 4/5 3-5 days Newbie friendliness 35/100

nats-io/nats-server#8531 · 2 comments · Opened Aug 28, 2026
Support desired state cluster management Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

nats-io/jsm.go#830 · Opened Aug 27, 2026
KV: TTL-purged values are revived by filestore rebuild after unclean shutdown on R1 streams Open

defect

nats-io/nats-server#8505 · 1 comment · 1 assignee · Opened Aug 24, 2026
[nack chart] support custom deployment annotations Open

proposal

Difficulty 3/5 1-2 days Newbie friendliness 55/100

nats-io/k8s#1191 · Opened Aug 24, 2026
Data race: ReloadOptions (reloadAuthorization/configureAccounts) races message delivery (processServiceImport) under JetStream traffic Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

nats-io/nats-server#8499 · Opened Aug 23, 2026
request() leaks memory for life of Client if no response is received Open

defect

Difficulty 4/5 3-5 days Newbie friendliness 58/100

nats-io/nats.rs#1617 · Opened Aug 22, 2026
Deadlock in Client#close: Thread#exit can orphan the client monitor Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

nats-io/nats-pure.rb#183 · Opened Aug 21, 2026
Add a direct IBufferWriter<byte> publish overload Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

nats-io/nats.net#1244 · 1 comment · Opened Aug 21, 2026
JetStream memory footprint grows with subject & dedup cardinailty despite storageType=File Open

defect

Difficulty 5/5 Over a week Newbie friendliness 35/100

nats-io/nats-server#8485 · 1 comment · Opened Aug 19, 2026
async-nats: Object Store get/read panics (unwrap() on TimedOut) when the backing stream loses quorum during a leader re-election Open

defect

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

nats-io/nats.rs#1615 · 1 comment · Opened Aug 19, 2026
drain() future completes true even when the drain timed out Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

nats-io/nats.java#1616 · Opened Aug 18, 2026
Secrets Disclosure in Debug Logs Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

nats-io/nats.js#427 · Opened Aug 18, 2026
Missing Secrets Redaction in Debug formatter for nats::Options Open

defect

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

nats-io/nats.rs#1613 · Opened Aug 18, 2026
Websocket URL Secrets in Cleartext in Logs Open

defect

Difficulty 3/5 1-2 days Newbie friendliness 72/100

nats-io/nats.py#1006 · Opened Aug 18, 2026
Account JWT mapping updates that fail AddWeightedMappings are silently discarded, leaving stale or empty mappings Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

nats-io/nats-server#8468 · Opened Aug 14, 2026
Ordered consumer hardcoded batch size Open

defect

Difficulty 3/5 1-2 days Newbie friendliness 68/100

nats-io/nats.rs#1611 · Opened Aug 14, 2026
Annotate connect timeout and reconnect wait as float Open

Difficulty 1/5 1-3 hours Newbie friendliness 78/100

nats-io/nats.py#1000 · Opened Aug 14, 2026
nats:2.12-alpine contains NATS Server 2.12.14 while latest published 2.12 release appears to be 2.12.12 Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

nats-io/nats-docker#316 · Opened Aug 12, 2026
Signed CONNECT branch cannot send `pass` alongside `jwt`+`sig` (auth-callout credential) Open

proposal

Difficulty 3/5 1-2 days Newbie friendliness 78/100

nats-io/nats.py#999 · Opened Aug 10, 2026
kv: history() reports a truncated read as a complete one when the link drops Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

nats-io/nats.js#426 · Opened Aug 10, 2026

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