by NATS.fm
Join us as we talk all things NATS.io on everything from the concepts & patterns, to use cases and real world outcomes. Each episode has video and audio so if you’re a watcher or listener, we have you covered. Want to suggest a topic or come and chat? Hit us up on Twitter, LinkedIn or the NATS Slack community!
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Publishing Since
8/1/2023
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April 8, 2025
<p>1. Distributed Message TracingGain full visibility into message paths across complex NATS topologies — including clusters, gateways, leaf nodes, account boundaries, and subject mappings.- Activated via a NATS-Trace header and supported directly in the CLI (nats trace [subject]).- Supports dry runs: trace a message’s route without delivering it, ideal for debugging or verification.- Useful for both operators and developers to understand and verify message flow behavior.2. Per-Message TTL (Time-To-Live)Set expiration per message with the NATS-TTL header — allowing messages to age out individually, regardless of stream-level retention settings.- TTLs are optional and per-message: not all messages need one, and TTL values can differ.- Backed by an efficient timed hash wheel structure to minimize memory use.- Major benefits for KV buckets — TTL-based deletion markers reduce storage and avoid manual compaction.3. Consumer Priority GroupsA new mechanism for pull-based load balancing and resilience:- Introduces overflow rules: clients can take over message delivery if primary clients are overwhelmed, using thresholds for pending messages or ACKs.- Pinning: designate a single client to receive all messages until it fails, enabling failover patterns.- One priority group per consumer in this release, designed to expand in the future.- Enables simpler, cost-effective cross-region and zone-aware delivery strategies.4. Multi-Message Get (Batch Get)Efficient, stateless retrieval of multiple messages from a stream — without creating consumers.- Supports multiple subject filters, time/sequence bounds, and returns data in sequence order.- Ideal for querying the latest messages, previewing stream data, or powering internal state lookups.- Foundational for upcoming KV/Object Store improvements and future batch operations.5. Consumer PauseTemporarily halt message delivery without tearing down the consumer or triggering client-side errors.- Works with both push and pull consumers.- Specify a pause_until deadline in the config — message flow resumes automatically afterward.- Heartbeats continue, so clients stay connected and unaware of the pause.- Valuable for maintenance, orchestration, or preventing unwanted consumption during deployments.</p>
February 17, 2025
<p>Tomasz Pietrek and David Gee are back to discuss Orbit: the NATS client extensions!You can find the Orbit libraries below:https://github.com/synadia-io/orbit.gohttps://github.com/synadia-io/orbit.jshttps://github.com/synadia-io/orbit.javahttps://github.com/synadia-io/orbit.rsEnjoy.</p>
December 5, 2024
NATS experts Tomasz Pietrek, Maurice van Veen, and David Gee break down core NATS concepts, demystifying the basics of connections and pub-sub messaging.
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Join us as we talk all things NATS.io on everything from the concepts & patterns, to use cases and real world outcomes. Each episode has video and audio so if you’re a watcher or listener, we have you covered.
Want to suggest a topic or come and chat? Hit us up on Twitter, LinkedIn or the NATS Slack community!
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