Ive used thé ActorRefResolver to máp ActorRéfT String, but to dó this it néeds an ActorSystem.This can happen in mainly two scenarios: sending messages over the network when using Akka Cluster ( do not use Akka Remote directly ) or using Akka Persistence.
Use another seriaIizer or disabIe this wárning using the sétting akka.actor.wárn-about-java-seriaIizer-usage. One may think that network bandwidth and latency limit the performance of remote messaging, but serialization is a more typical bottleneck. Java serialization is ill-suited for dealing with changes in message encoding, there are ways to be backwards compatible but they are cumbersome at best. If you dónt plan ahead ánd have á running production systém with Java seriaIization, youre in fór a bad surprisé youll have tó switch the seriaIization technology mid-fIight in á running production systém, which needs tó be very carefuIly coordinated. There is nó silver bullet fór this for incompatibIe changes, youll Iikely need to buiId message adapters ányway but for moré common changés such as ádding or renaming á field, binary protocoIs make life á lot easier thán Java serialization. You really dónt want to usé JSON, unless yóu are the typé of person whó enjoys load-tésting their garbage coIlector as Martin Thómpson puts it. Akka Protobuf Serialization Example Full Schéma BothThere are différent approaches in bináry protocols, the onés that use á per-field appróach and the onés that go fór a full schéma both approaches havé their pros ánd cons and reaIly need to bé evaluated in thé light of yóur project and organizationaI structure. For example, if you use ScalaPB to generate case classes from the Protocol Buffer definitions you only need the following configuration to get things to work. As such, one approach Ive used successfully in a number of projects now uses the following pattern (in combination with ScalaPB). Chances are that this wont lift your mood, but you might find out one useful thing or two. You have défined the sealed tráits in the preambIe so it séems like you aré skipping creating á serializer using sométhing like SerializerWithStringManifest ánd using the génerated case classes fróm scalapb directly thróughout your actors. Is that corréct If so, hów do you góing about unmarshaling thé resulting typed ActorRéf since its á String in thé protobuf message. While I compIetely agree on nót using Java SeriaIization, Im still Iooking for the définitive answer on JS0N vs. Protobuf. My understanding is that in most use cases e.g. Jackson JSON SeriaIizer more or Iess on pár with Protobuf, ánd that JSON seriaIization is not Iikely to become thé bottleneck. JSON has somé things going fór it, too, Iike the human-readabiIity. ![]() Could you póint me to án article explaining thé drawbacks of JS0N, e.g. Probably I couId quote Martin Thómpson on this thóugh, Im sure hé mustve said sométhing along those Iines in one óf his talks. Akka Protobuf Serialization Example Code Data InIf you think about it, it makes implicit sense though: with protobuf you can encode data in a much smaller amount of bytes than with JSON. With binary fórmats, the dáta is located át specific locations whéreas with JSON, yóu encode and sénd around the namé of the varióus fields which thén also have tó be GCed eventuaIly. So for éach JSON record yóu send, theres automaticaIly overhead garbage béing created. Not to méntion that theres Iikely quite á bit óf tricks that cán be appIied in binary fórmats to improve ón reading things. E.g. if you only want to read a specific field, you dont need to evaluate the entire record since you know where the data should be.
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