InfoQ Homepage Distributed Systems Content on InfoQ
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About the SOA Heritage Impact on Microservices
The heritage from SOA impacts the approach and design of a microservices architecture, how we select technology, and also the organisational aspects, Tareq Abedrabbo claimed at the recent Microservices Conference µCon London 2017. One example from his experience is that many organisations still have a separation between enterprise architects and developers.
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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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Distributed Schedulers with Microservice Architectures
Martin Campbell, microservices scalability expert at DigitalOcean, talked about running a microservice based architecture with a distributed scheduler at MicroXchg Berlin 2017. He focused primarily on the problems encountered along the way, and the tradeoffs between offerings like Kubernetes, Nomad, and Mesos.
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Process Managers in Event-Based Systems
Publishing events to notify about changes in a domain keeps different domains decoupled from each other, but if there really is a logical flow of events it becomes implicit and hard to follow. A better solution is to use a Process Manager to keep track of the overall process, Bernd Rücker stated in his presentation at this year’s DDD eXchange conference.
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A Comparison of Mapping Approaches for Distributed Cloud Applications
An application map is a topology view of the components of a distributed application and the network or interprocess interactions between them. A recent article gives an overview of application mapping approaches adopted by various tools like AppDynamics, OpenTracing and Netsil.
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FaunaDB: A New Distributed Database from the Team That Scaled Twitter
Former technical leaders from Twitter and Couchbase have created FaunaDB, a new general-purpose database.
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Moving Deliveroo from a Monolith to a Distributed System
Deliveroo has grown dramatically the last years, both in terms of business and IT, and is facing a lot of technical challenges with its large monolithic application. The solution is to go distributed, but without microservices, Greg Beech noted in his presentation at the recent QCon London conference, describing their move from a monolith into a distributed system.
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Enterprise Ethereum Alliance Releases Vision Paper
The newly formed Enterprise Ethereum Alliance has published a Vision Paper outlining “a vision for users and stakeholders to propose, implement, and integrate advances to the Ethereum protocol with support for Enterprise Ethereum protocols.” In this paper the EEA discusses many topics related to Pluggable Consensus, interoperability, Ethereum protocol updates, storage and performance.
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Apache Flink 1.2 Released with Dynamic Rescaling, Security and Queryable State
Apache Flink 1.2 was announced and features dynamic rescaling, security, queryable state, and more. The release resolved 650 issues, maintains compatibility with all public APIs and ships with Apache Kafka 0.10 and Apache Mesos support. Flink’s dynamic rescaling allows one to change the parallelism of a streaming job or of an operator within the job.
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Apache HBase 1.3 Ships with Multiple Performance Improvements
Apache HBase 1.3.0 was released mid-January 2017 and ships with support for date-based tiered compaction and improvements in multiple areas, like write-ahead log (WAL), and a new RPC scheduler, among others. The release includes almost 1,700 resolved issues in total.
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Moving a Monolithic Application towards a Microservices Architecture
Migrating an existing system towards microservices is very different from building a new micoservices-based system, Joris Kuipers, architect at Trfork Amsterdam, claims in a presentation describing an ongoing process of refactoring a large monolithic application, based on CQRS using Axon framework, towards a microservices architecture.
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Focus on the Process, Not on Individual Microservices
The key to success when working with a microservices based distributed system is to focus on the distributed process as a whole, not on the microservices themselves. The services are the least important part, Eric Ess claimed at the recent Microservices Conference in London, in his presentation on how to monitor distributed processes at jet.com.
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Authentication Strategies in Microservices Systems
Software security is a complex problem, and is becoming even more complex using Microservices where each service has to deal with security, David Borsos explained at the recent Microservices Conference in London, during his presentation evaluating four end-user authentication options within a microservice based systems.
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Honeycomb - A Tool for Debugging Complex Systems
Honeycomb is a tool for observing and correlating events in distributed systems. It provides a different approach from existing tools like Zipkin in that it moves away from the single-request-tracing model to a more free-form model of collecting and querying data across layers and dimensions.
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Yahoo! Open Sources Pulsar, a Pub/Sub Messaging Platform
Yahoo! has made available Pulsar, their publish-subscribe messaging platform used internally in production by several services.