Building, testing, containerizing, deploying, and monitoring distributed microservices is difficult, but using Lightbend technologies can make it a lot faster and easier to be successful. In this four part blog series, we walk you through a working Proof of Concept (PoC) built using Lightbend’s open source distributed toolkit, Akka. This PoC delivers a resilient, highly performant, elastic, distributed, and consistent state solution that provides an automatic in memory cache with a persistent backing. Here is the breakdown:
- Part 1 - Getting Started: we walk through building, testing, and running the PoC locally, with instrumentation and monitoring wired in from the very beginning using Lightbend Telemetry.
- Part 2 - Docker and Local Deploy: here we cover containerizing our PoC, and then deploying locally in Docker. Then, we’ll load test and monitor our PoC as we did in the first installment.
- Part 3 - Kubernetes and Monitoring: in this part,we introduce Lightbend Console for Kubernetes (K8s), and then deploy our PoC in Minikube (desktop version of K8s) using YAML files provided in this repository. Again, we’ll load test with Gatling, but this time we’ll monitor our PoC in Lightbend Console.
- Part 4 - Source Code: In our final installment, we do a deep dive into our Scala source code.
Note: This repoistory is written for Scala developers, a Java version can be found here.
- Move to Java 21
- upgrade all Akka Dependencies to release v24.05.3
- upgrade SBT to v1.10.0
- upgrade Gatling to v3.12.0
- fixed bug in Gatling scenario
- migrate docker-compose & nonsup-docker-compose to use Akka Cluster Bootstrap w/ DNS instead of using Seed nodes for Akka Cluster formation.
- updated the branch
mread-multi-dc-common-journal, which supports Akka's Replicated Event Sourcing "Common Journal" running on Multi-Data Center / Microk8s and Yugabyte. Updated README.md can be found here.
- update Akka related dependencies to latest
- Moved to Java 17 base image
- Set up for Akka DNS cluster formation on Docker w/ Yugabyte. Doc here.
- Updated Akka, Akka Http, and Akka gRPC dependencies with the latest versions
- recreated the missing gRPC Client (ArtifactStateForEach) example for request / response
- Merged PR to include gRPC support even though blog hasn't been updated yet. No ETA on blog update.
- This repo written in Java can be found here.
- On Branch: mread-add-grpc-endpoint: updated the instructions for deploying locally on Microk8s.
- On Branch: mread-add-grpc-endpoint, which will be merged to master, once we update the blog post
- fix Cassandra v3.11.11 docker-compose files
- fixed deprecation warnings
-
Upgraded all versions of the Lightbend stack's dependencies to the currently released versions.
- The biggest change revolves around the change of the
akka-persistence-cassandra(v0.102 -> v1.0.5), which requires a migration in tables and configuration. - Scala: v2.13.1 -> v2.13.6
- Sbt v1.3.9 -> v1.5.5
- Akka: v2.6.6 -> v2.6.15
- Akka Http: v10.1.12 -> v10.2.5
- Akka Management v1.0.8 -> v1.1.1
- Lightbend Telemetry -> v2.14.0 -> v2.16.1
- Java: v8 -> v11
- The biggest change revolves around the change of the
-
Microk8s - tested locally on Microk8s, please see microk8s/README.md for more information.
-
locked in to cassandra image to: v3.11.11
In honor of Lightbend’s release of Akka’s Split Brain Resolver as OSS, I’ve updated this repository to take advantage of Akka 2.6.6.
For more information on Akka Split Brain Resolver please see the announcement here → https://akka.io/blog/news/2020/06/08/akka-2.6.6-released-split-brain-resolver
Also, Patrik Nordwall’s video on Split Brain Resolver is really great in helping you understand why you should care → https://akka.io/blog/news/2020/06/08/akka-split-brain-resolver-video