InfoQ Homepage Event Stream Processing Content on InfoQ
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Distributed Messaging Framework Apache Pulsar 2.0 Supports Schema Registry and Topic Compaction
The latest version of open-source distributed pub-sub messaging framework Apache Pulsar enables companies to move “beyond batch” by acting on data in motion. Streamlio recently announced the availability of Apache Pulsar 2.0 streaming messaging solution. The new version supports Pulsar Functions, Schema Registry and Topic Compaction.
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Microsoft Announces Azure Event Hubs for Kafka Ecosystems in Public Preview
During Build 2018, Microsoft announced it would support Kafka clients to integrate with Azure Event Hubs. The Microsoft engineering team responsible for Azure Event Hubs made a Kafka endpoint available for users of their service to stream event data into it.
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Hazelcast Releases Jet 0.6 for Stream and Fast Batch Processing
Hazelcast, maker of distributing computing technologies and tools, have released a new major version (version 0.6) of Jet, their open-source streaming processing engine.
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Spring Cloud Stream 2.0 Released with Focus on Performance, Flexibility and Consistency
Pivotal has announced the General Availability release of the Spring Cloud Stream 2.0. This release includes a complete revamp of content-type negotiation functionality (allowing user-defined message converters), polling consumers, micrometer metrics support, enhanced Apache Kafka Streams support, and more.
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Retroactive and Future Events in an Event Sourced System
When Thomas Pierrain started a new project with an asset management company, one important requirement was the ability to go back in time to understand why they took decisions that today look strange. At the recent DDD Europe 2018 conference in Amsterdam, Pierrain discussed his experiences when building an event sourced system that included some temporal challenges.
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Event Sourcing in an Unreliable World
Examples of event sourced systems are often from process-oriented domains, like e-commerce, with incoming commands that generate events. But there are domains without processes that are intrinsically unreliable where we are collecting events from external event sources with transports that are unreliable, Lorenzo Nicora explained at the recent Microservices Conference µCon London 2017.
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Jonas Bonér on How Events Are Reshaping Modern Systems
Jonas Bonér talked about event driven services and how event driven architectures (EDA) and event stream processing (ESP) technologies are helping with designing the modern applications based on distributed systems. He spoke at the recent Reactive Summit 2017 Conference.
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Event Architectures and Event Streaming
When moving from a monolithic system to a distributed or microservices system, you commonly also move from a single source of truth in one database to many databases and thus many sources of truth. Using an event architecture and persisting all events as a stream can give back the single source of truth, Ben Stopford claims in one of a series of blog posts about events, event streams and Kafka.
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Selecting an Event Architecture
When designing a distributed system, maybe based on microservices, and you are considering an event architecture, there are several models and technologies available. When choosing how to implement the architecture the non-functional requirements are a main factor, David Dawson claims when describing different styles of event architectures in a recent blog post.
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Versioning of Events in Event Sourced Systems
A challenge with event sourced systems is that events put in the event store years ago must be readable today, even though the software has gone through numerous changes, Greg Young stated in his presentation at this year’s DDD eXchange conference. If a system can be taken down, versioning of events is relatively simple. The real challenge comes when a system can’t be taken down.
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Integrate 2017 Recap: Adding Intelligence to Integration
Integrate 2017, an annual integration event focused on Microsoft Integration technologies, took place in London from June 26th – 28th. Some of the key themes that were discussed include the role of cognitive computing in integration, API orchestration, SaaS connectivity, cloud native integration, the impact of serverless on integration and cloud messaging at scale.
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Overview of the Reliable Event Delivery System at Spotify
Spotify clients generate up to 1.5 million events per second at peak hours and all are handled by their Event Delivery System, designed to have a predictable latency and to never lose an event, Igor Maravic noted in his presentation at the recent QCon London conference, where he gave a high level overview of the system and some of the key operational aspects.
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Hazelcast Release Jet, Open-Source Stream Processing Engine
Hazelcast, previously known for the open-source caching and in-memory data grid technologies, has announced a major release of their new stream processing engine, Jet.
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Chaperone - A Kafka Auditing Tool from the Uber Engineering Team
The Uber Engineering team released their Kafka auditing tool called Chaperone as an open-source project. Chaperone allows for auditing and detection of data loss, latency, and duplication of messages in the multi-datacenter and high-volume Kafka setup at Uber.
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Apache Eagle, Originally from eBay, Graduates to top-level project
Apache Eagle, an open-source solution for identifying security and performance issues on big data platforms, graduates to Apache top level project on January 10, 2017. Firstly open-sourced by eBay on October 2015, Eagle was created to instantly detect access to sensitive data or malicious activities and, to take actions in a timely fashion.