Akka provides serializers for java.io.Serializable and protobuf com.google.protobuf.GeneratedMessage by default (the latter only if depending on the akka-remote module), so normally you don’t need to add configuration for that; since com.google.protobuf.GeneratedMessage implements java.io.Serializable, protobuf messages will always be serialized using the protobuf protocol unless. Provides simple access to fast and efficient 'Protocol Buffers' serialization from.NET applications.

One may think that network bandwidth and latency limit the performance of remote messaging, but serialization is a more typical bottleneck.' Now, performance is one reason to not use Java serialization – but there are stronger reasons to not engage with it, especially in the context of Akka: • security: Java serialization is a for some time now •: when using Akka Persistence for event sourcing, you will encounter situations in which you need to evolve the stored messages (unless you don’t use the project in production and the requirements never evolve). Java serialization is ill-suited for dealing with changes in message encoding, but they are cumbersome at best. If you don’t plan ahead and have a running production system with Java serialization, you’re in for a bad surprise – you’ll have to switch the serialization technology mid-flight in a running production system, which needs to be very carefully coordinated • message protocol evolution: when you’re running a clustered application and want to redeploy it in a rolling fashion (i.e. Upgrading one node after the other), you’ll be faced with having nodes at different protocol versions running. There is no silver bullet for this – for incompatible changes, you’ll likely need to build message adapters anyway – but for more common changes such as adding or renaming a field, binary protocols make life a lot easier than Java serialization What to do instead?

When starting a new project, the first thing you should do is to disable Java serialization by adding this line to application.conf. Argolis smart reader execution. Next, you will need a binary serialization protocol.

You really don’t want to use JSON, unless you are the type of person who enjoys load-testing their garbage collector. There are quite a few around by now: • • • • • (if you care about high performance) Martin Kleppmann wrote a nice with a focus on message evolution. There are different approaches in binary protocols, the ones that use a per-field approach and the ones that go for a full schema – both approaches have their pros and cons and really need to be evaluated in the light of your project and organizational structure.

Akka uses Protocol Buffers internally, which has the advantage that integrating those is quite straightforward. For example, if you use you only need the following configuration to get things to work. One more thing: with the rise of, the best practice of defining one protocol per actor (instead of sharing messages) becomes even the more relevant.

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