This is an automated email from the ASF dual-hosted git repository.
piotr pushed a commit to branch main
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The following commit(s) were added to refs/heads/main by this push:
new 803fbf7e Add release 0.7.0
803fbf7e is described below
commit 803fbf7e016c1c63f03d7236e4c00198ab3af78b
Author: spetz <[email protected]>
AuthorDate: Tue Feb 24 21:04:16 2026 +0100
Add release 0.7.0
---
content/blog/release-0.6.0.mdx | 2 +-
content/blog/release-0.7.0.mdx | 167 +++++++++++++++++++++
.../blog/technology-radar-and-currrent-goals.mdx | 2 +-
src/app/(site)/downloads/page.tsx | 12 +-
4 files changed, 180 insertions(+), 3 deletions(-)
diff --git a/content/blog/release-0.6.0.mdx b/content/blog/release-0.6.0.mdx
index f7704f8c..5c32d44f 100644
--- a/content/blog/release-0.6.0.mdx
+++ b/content/blog/release-0.6.0.mdx
@@ -93,7 +93,7 @@ Server and UI combined into a **[unified Helm
chart](https://github.com/apache/i
## What's Next
-Our primary focus is **clustering with [Viewstamped Replication
(VSR)](https://pmg.csail.mit.edu/papers/vr-revisited.pdf)** consensus protocol.
This will enable fault-tolerant, replicated deployments — a critical milestone
for production workloads requiring high availability and reliability.
+Our primary focus is **clustering with [Viewstamped Replication
(VSR)](https://sands.kaust.edu.sa/classes/CS240/F21/papers/vr-revisited.pdf)**
consensus protocol. This will enable fault-tolerant, replicated deployments — a
critical milestone for production workloads requiring high availability and
reliability.
Other upcoming efforts:
- Server's core optimizataions such as kTLS, DirectIO, NUMA, TCP connections
transfer across shards and more
diff --git a/content/blog/release-0.7.0.mdx b/content/blog/release-0.7.0.mdx
new file mode 100644
index 00000000..75fddae6
--- /dev/null
+++ b/content/blog/release-0.7.0.mdx
@@ -0,0 +1,167 @@
+---
+title: Apache Iggy 0.7.0 Release
+author: piotr
+tags: ["release", "0.7.0", "announcement"]
+date: 2026-02-24
+---
+## Release 0.7.0
+
+Less than three months after
[0.6.0](https://iggy.apache.org/blogs/2025/12/09/release-0.6.0/), we're excited
to release **[Apache Iggy
0.7.0](https://github.com/apache/iggy/releases/tag/server-0.7.0)** — a massive
step toward production-ready clustering.
+
+While 0.6.0 was about the io_uring rewrite, 0.7.0 is about what comes next:
**replication**. We've built the foundations for **Viewstamped Replication
(VSR)** consensus, redesigned how the server manages metadata, added **NUMA
awareness** and **socket migration**, embedded the **Web UI directly into the
server binary**, and shipped important improvements across all SDKs and
connectors.
+
+## New Committer
+
+We're thrilled to welcome **[Łukasz Zborek](https://github.com/lukaszzborek)**
as a new Apache Iggy committer! Łukasz has been a core contributor to our C#
SDK and is the #8 contributor in our repository. His work goes far beyond
building a top-notch C# SDK — he has helped find and fix issues across many
areas of the project. His contributions span CI, BDD testing, core features
like TLS support, reconnection handling, and the high-level consumer/publisher
APIs. Congratulations, Łukasz!
+
+---
+
+## Iggy Server
+
+### Clustering & VSR Consensus
+
+The primary focus of 0.7.0 is laying the groundwork for **clustering with
[Viewstamped Replication
(VSR)](https://sands.kaust.edu.sa/classes/CS240/F21/papers/vr-revisited.pdf)**
— a critical milestone for fault-tolerant, replicated deployments.
+
+We've implemented the core consensus building blocks that will power the
upcoming cluster mode:
+
+- **[VSR view_change](https://github.com/apache/iggy/pull/2546)** — the view
change protocol from the VSR-revisited paper, enabling leader election and
fault recovery
+- **[Replication pipeline](https://github.com/apache/iggy/pull/2493)** — core
replication machinery including `on_ack`, `send_prepare_ok`, and `replicate`,
with [on_replicate](https://github.com/apache/iggy/pull/2469) for data
propagation between nodes
+- **[Deterministic tick-based
timeouts](https://github.com/apache/iggy/pull/2450)** — precise, deterministic
timeout mechanism essential for correct consensus behavior
+- **[Metadata snapshots](https://github.com/apache/iggy/pull/2675)** — a
three-layer snapshot system enabling state transfer between replicas for
recovery and bootstrapping
+- **[Partitions module](https://github.com/apache/iggy/pull/2735)** —
extracted partition and segment logic into a dedicated crate, with a [unified
Partitions trait](https://github.com/apache/iggy/pull/2620) that abstracts both
single-node and replicated operations behind the same interface
+- **[Pipeline decoupling](https://github.com/apache/iggy/pull/2740)** — made
`VsrConsensus` generic over the `Pipeline` trait, so implementations can be
swapped and memory usage is reduced by keeping only headers in the pipeline
+- **[Message bus](https://github.com/apache/iggy/pull/2446)** — internal
message bus for inter-component communication
+- **[Simulator](https://github.com/apache/iggy/pull/2688)** — initial version
of a distributed system simulator for testing VSR behavior in a controlled,
deterministic environment
+
+### LeftRight-Based Global Metadata
+
+We've **[replaced the distributed slab ECS
approach](https://github.com/apache/iggy/pull/2555)** with a centralized
**LeftRight-based global metadata store**. This is one of the largest
refactoring efforts in this release — shards now read from a shared, lock-free
snapshot while shard 0 exclusively handles writes. The result is consistent
metadata across all shards without per-read synchronization, and a much simpler
concurrency model that's easier to reason about and extend for clustering.
+
+### NUMA Awareness
+
+The server now features **[NUMA
awareness](https://github.com/apache/iggy/pull/2412)** with configurable CPU
affinity and memory binding per NUMA node. On multi-socket machines, this keeps
each shard's memory local to its CPU, reducing cross-socket latency and
improving cache efficiency — an important optimization for high-throughput
deployments.
+
+### Socket Migration Across Shards
+
+**[TCP socket migration](https://github.com/apache/iggy/pull/2476)**
eliminates cross-shard forwarding overhead. When a client connects to a shard
that doesn't own its target partition, the socket is migrated to the correct
shard instead of forwarding every request. This significantly reduces latency
for workloads spread across multiple shards.
+
+### Embedded Web UI
+
+The Web UI can now be **[embedded directly into the server
binary](https://github.com/apache/iggy/pull/2485)**, served at the `/ui`
endpoint. No separate deployment needed — just start the server and open the
dashboard. The feature is **[enabled by
default](https://github.com/apache/iggy/pull/2497)** and can be
**[toggled](https://github.com/apache/iggy/pull/2494)** via `http.web_ui` in
the server config.
+
+### Cooperative Partition Reassignment
+
+**[Cooperative partition
reassignment](https://github.com/apache/iggy/pull/2734)** for consumer groups
eliminates message duplicates during rebalancing. Previously, partitions were
moved instantly on join — the old consumer could still be mid-processing while
the new one polled the same uncommitted offset. The new approach introduces a
"pending revocation" phase where partitions are held until the committed offset
catches up or a timeout is reached, ensuring clean handoff without duplicates.
+
+### Log Rotation
+
+**[Configurable log rotation](https://github.com/apache/iggy/pull/2452)**
based on file size and retention policies prevents unbounded log growth in
long-running deployments.
+
+### Breaking Changes
+
+- **[Reserved u64 in message
header](https://github.com/apache/iggy/pull/2657)** — added for
forward-compatible protocol extensions (all SDKs updated)
+- **[Arbitrary header key kinds](https://github.com/apache/iggy/pull/2637)** —
`HeaderKey` now supports non-string types, matching `HeaderValue` capabilities
+- **[MessagePack replaces bincode](https://github.com/apache/iggy/pull/2523)**
— state persistence switched to `msgpack` from the unmaintained `bincode`
+- **[Compile-time env var
mappings](https://github.com/apache/iggy/pull/2614)** — new `configs_derive`
crate replaces runtime path inference, making environment variable handling
explicit and unambiguous; `server.toml` renamed to `config.toml`
+- **[Legacy C++ client removed](https://github.com/apache/iggy/pull/2668)** —
the old C++ client has been removed from the repository
+
+### Security Improvements
+
+- **[Hardened deserializers](https://github.com/apache/iggy/pull/2741)** — all
command deserializers now use checked reads instead of direct byte indexing,
preventing malformed packets from crashing the server
+- **[Password hashing before state
log](https://github.com/apache/iggy/pull/2724)** — fixed a critical bug where
plaintext passwords were persisted to the state log, causing login failures
after server restart
+- **[Auth required for stats](https://github.com/apache/iggy/pull/2559)** —
the `/stats` endpoint now requires authentication
+- **[Permission inheritance fixes](https://github.com/apache/iggy/pull/2564)**
— consolidated permissions into the metadata crate and fixed broken inheritance
(e.g., `manage_stream` now correctly implies `read_stream`)
+
+### Notable Bug Fixes
+
+- **[Memory leak in segment
rotation](https://github.com/apache/iggy/pull/2686)** — sealed segments
retained index buffers and open file writers indefinitely; under heavy load,
memory could grow unbounded
+- **[Message cleaner](https://github.com/apache/iggy/pull/2670)** — new
segments ignored the topic's configured `message_expiry`, causing messages to
never be cleaned up
+- **[Stream stats corruption](https://github.com/apache/iggy/pull/2736)** —
purging one topic incorrectly zeroed stats for the entire stream
+- **[Segment rotation race](https://github.com/apache/iggy/pull/2588)** —
prevented panic when segment rotates during async persistence
+- **[IOV_MAX overflow](https://github.com/apache/iggy/pull/2581)** — chunked
vectored writes for large message batches
+- **[Message availability during
persistence](https://github.com/apache/iggy/pull/2575)** — messages remain
readable during async disk I/O
+- **[Graceful shutdown](https://github.com/apache/iggy/pull/2439)** — all
shards shut down cleanly when one panics, with [panic
propagation](https://github.com/apache/iggy/pull/2515) from connection handlers
and [critical task failure handling](https://github.com/apache/iggy/pull/2506)
+- **[Consumer group leave race](https://github.com/apache/iggy/pull/2521)** —
fixed race condition in consumer group leave and index corruption in
`append_messages`
+- **[Stale consumer group clients](https://github.com/apache/iggy/pull/2547)**
— properly handled stale clients in consumer group operations
+- **[PAT broadcast across shards](https://github.com/apache/iggy/pull/2589)**
— personal access tokens created via HTTP are now broadcast to all shards,
fixing cross-protocol visibility
+- **[Empty permission maps crash](https://github.com/apache/iggy/pull/2527)**
— fixed server crash on restart when users had empty permission maps
+- **[Entity ID gaps on bootstrap](https://github.com/apache/iggy/pull/2548)**
— handled ID gaps after deletions during server restart
+
+Docker images are available on **[Docker
Hub](https://hub.docker.com/u/apache?page=1&search=iggy)**.
+
+---
+
+## SDKs
+
+All SDKs now have **auto-publishing** enabled — edge and RC versions are
automatically published to their respective package registries on every merge.
+
+- [Rust](https://crates.io/crates/iggy) — improved high-level
producer/consumer with ordered sharding, graceful `shutdown()`, and message
loss prevention; fixed `max_in_flight` permit acquisition and client
reconnection after disconnect
+- [C#](https://www.nuget.org/packages/Apache.Iggy/) — .NET 10 support,
`DeleteSegments` and `GetSnapshot` methods, `TimeSpan`-based expiry handling,
source link for debugging
+- [Java](https://mvnrepository.com/artifact/org.apache.iggy/iggy-java-sdk) —
fluent builder API (`Iggy.tcpClientBuilder().blocking()`), semantic exception
hierarchy, BDD tests with Cucumber, user headers support, TLS for HTTP, memory
leak detection in CI
+- [Python](https://pypi.org/project/apache-iggy/) — `AsyncIterator` interface
for `IggyConsumer`, `message_expiry` parameter in `create_topic`, Windows build
support
+- [Node.js (TypeScript)](https://www.npmjs.com/package/apache-iggy) —
comprehensive JSDoc comments for improved API documentation and IDE support
+- [Go](https://pkg.go.dev/github.com/apache/iggy/foreign/go) — leader
redirection for cluster failover handling
+
+---
+
+## Connectors
+
+New connectors and runtime improvements:
+
+- **[Apache Pinot connector](https://github.com/apache/iggy/pull/2499)** — new
external connector for Apache Pinot integration
+- **[Postgres sink & source](https://github.com/apache/iggy/pull/2579)** —
extended with JSON and raw message format support, multiple processing modes
(mark/delete), and comprehensive integration tests
+- **[Prometheus metrics](https://github.com/apache/iggy/pull/2633)** —
`/metrics` and `/stats` endpoints for monitoring connector runtime,
per-connector message counters, CPU/memory tracking
+- **[Quickwit sink tests](https://github.com/apache/iggy/pull/2636)** —
integration test coverage for the Quickwit sink
+- **[Telemetry logging](https://github.com/apache/iggy/pull/2612)** —
structured logging with telemetry for connectors and MCP
+- **[Retry mechanism](https://github.com/apache/iggy/pull/2437)** —
configurable retry with exponential backoff for the HTTP config provider
+- **[State loss prevention](https://github.com/apache/iggy/pull/2743)** and
**[memory leak fix](https://github.com/apache/iggy/pull/2685)** — critical
reliability improvements for long-running connectors
+
+Learn more in the [documentation](/docs/connectors/introduction).
+
+---
+
+## Web UI
+
+- Embedded into the server binary (see above)
+- User headers now display decoded values based on their type (string, int,
float, bool, etc.) with expandable rows for type details
+- Checksum displayed as hex alongside raw value
+- Fixed root user ID (now 0 instead of 1)
+- Fixed logout side-effect on page load
+- Refactored from SSR to SPA with client-side authentication
+- Benchmark dashboard upgraded to Yew 0.22
+
+---
+
+## Helm Charts
+
+- **[Fixed volume mount path](https://github.com/apache/iggy/pull/2526)** and
added io_uring requirements for proper Kubernetes deployment
+
+---
+
+## CI/CD & Infrastructure
+
+- **ARM64 builds** — native ARM64 runners with shared Docker cache, aarch64
builds in pre-merge and release workflows
+- **Edge releases** — rolling pre-releases with versioned Docker tags (e.g.,
`0.6.1-edge.2`) and binary tarballs
+- **Auto-publish** — all SDKs (Rust, C#, Java, Python, Node.js, Go)
automatically publish edge/RC versions on merge
+- **Code coverage** — Codecov integration for Rust and Java
+- **Pre-commit hooks** — local validation for all SDKs matching CI tools and
versions
+- **Test harness** — `iggy_harness` proc macro for consistent,
boilerplate-free test infrastructure with crash detection
+
+---
+
+## What's Next
+
+Our primary focus remains **completing the clustering implementation with VSR
consensus**. The foundations laid in 0.7.0 — view change, replication pipeline,
metadata snapshots, partitions module — will come together into a fully
functional replicated cluster in the upcoming releases.
+
+Other upcoming efforts:
+- Server core optimizations: kTLS, DirectIO, and further NUMA and socket
migration improvements
+- Expanding SDKs with synchronous clients and
[sans-io](https://www.firezone.dev/blog/sans-io) design
+- Enhancing the Connectors Runtime with more integrations
+- Web UI improvements
+- Exploring **Agentic AI** use cases for streaming-based agent coordination
+
+---
+
+Thanks to our amazing community and contributors for making Apache Iggy better
with every release. A special welcome to our new committer Łukasz Zborek!
+
+**Join us on [Discord](https://discord.gg/apache-iggy) and help shape the
future of the project!**
diff --git a/content/blog/technology-radar-and-currrent-goals.mdx
b/content/blog/technology-radar-and-currrent-goals.mdx
index c935cdf1..8706c740 100644
--- a/content/blog/technology-radar-and-currrent-goals.mdx
+++ b/content/blog/technology-radar-and-currrent-goals.mdx
@@ -29,7 +29,7 @@ Without a doubt, being able to run your infrastructure (which
processes & stores
We've started [experimenting](https://github.com/iggy-rs/iggy-cluster-sandbox)
with the replication over half a year ago already by implementing the basic,
Raft based consensus algorithm for the simple message streaming server.
-At the same time, we were researching the other possible solutions, after
we've finally decided to move on with **Viewstamped Replication** (in its
[revisited form](https://pmg.csail.mit.edu/papers/vr-revisited.pdf)), which was
successfully used by e.g. [TigerBeetle](https://tigerbeetle.com/).
+At the same time, we were researching the other possible solutions, after
we've finally decided to move on with **Viewstamped Replication** (in its
[revisited
form](https://sands.kaust.edu.sa/classes/CS240/F21/papers/vr-revisited.pdf)),
which was successfully used by e.g. [TigerBeetle](https://tigerbeetle.com/).
Long story short - the **deterministic leader election**, allows us to go for
ring topology and chain replication of our data - it's excellent for high
throughput, which is very important for us.
diff --git a/src/app/(site)/downloads/page.tsx
b/src/app/(site)/downloads/page.tsx
index 45e45375..41dc41fc 100644
--- a/src/app/(site)/downloads/page.tsx
+++ b/src/app/(site)/downloads/page.tsx
@@ -8,8 +8,18 @@ export const metadata: Metadata = {
const releases = [
{
- version: "0.6.0-incubating",
+ version: "0.7.0-incubating",
latest: true,
+ date: "2026-02-24",
+ archive:
+
"https://downloads.apache.org/incubator/iggy/0.7.0/iggy-0.7.0-incubating-src.tar.gz";,
+ asc:
"https://downloads.apache.org/incubator/iggy/0.7.0/iggy-0.7.0-incubating-src.tar.gz.asc";,
+ sha:
"https://downloads.apache.org/incubator/iggy/0.7.0/iggy-0.7.0-incubating-src.tar.gz.sha512";,
+ changelog: "/blogs/2026/02/24/release-0.7.0",
+ },
+ {
+ version: "0.6.0-incubating",
+ latest: false,
date: "2025-12-09",
archive:
"https://downloads.apache.org/incubator/iggy/0.6.0/iggy-0.6.0-incubating-src.tar.gz";,
