Install Docker: https://www.docker.com/docker-toolbox
So, you can simply run a test cluster:
#remove previous nodes if necessary
docker kill kamon-grafana-dashboard
docker rm kamon-grafana-dashboard
docker kill hazelseed
docker rm hazelseed
docker kill hazelnode1
docker rm hazelnode1
docker kill hazelnode2
docker rm hazelnode2
docker kill dseseed
docker rm dseseed
docker kill dsenode1
docker rm dsenode1
docker kill dsenode2
docker rm dsenode2
#start new cluster
docker run -d -p 80:80 -p 8125:8125/udp -p 8126:8126 --name kamon-grafana-dashboard dk14/docker_grafana_graphite
docker run -d --name hazelseed -h hazelseed --link kamon-grafana-dashboard -p 5701:5701 dk14/docker-hazel
docker run -d --name hazelnode1 -h hazelnode1 --link hazelseed --link kamon-grafana-dashboard dk14/docker-hazel
docker run -d --name hazelnode2 -h hazelnode2 --link hazelseed --link kamon-grafana-dashboard dk14/docker-hazel
docker run -d --name dseseed -h dseseed --link kamon-grafana-dashboard -p 7000:7000 -p 9042:9042 -p7 077:7077 -p 8983:8983 dk14/docker-dse
docker run -d --name dsenode1 -h dsenode1 --link dseseed --link kamon-grafana-dashboard dk14/docker-dse
docker run -d --name dsenode2 -h dsenode2 --link dseseed --link kamon-grafana-dashboard dk14/docker-dse
Or build it from sources and run
git clone https://github.com/dk14/cache-performance.git
cd cache-performance
docker build -t dse docker-dse
docker build -t hazel docker-hazel
#start new cluster
docker run -d -p 80:80 -p 8125:8125/udp -p 8126:8126 --name kamon-grafana-dashboard kamon/grafana_graphite #pure grafana here, need setup
docker run -d --name hazelseed -h hazelseed --link kamon-grafana-dashboard -p 5701:5701 hazel
docker run -d --name hazelnode1 -h hazelnode1 --link hazelseed --link kamon-grafana-dashboard hazel
docker run -d --name hazelnode2 -h hazelnode2 --link hazelseed --link kamon-grafana-dashboard hazel
docker run -d --name dseseed -h dseseed --link kamon-grafana-dashboard -p 7000:7000 -p 9042:9042 -p 7077:7077 -p 8983:8983 dse
docker run -d --name dsenode1 -h dsenode1 --link dseseed --link kamon-grafana-dashboard dse
docker run -d --name dsenode2 -h dsenode2 --link dseseed --link kamon-grafana-dashboard dse
Now you can connect to 192.168.99.100:80 (setup) to see grafana dashboard with metrics:
Coherence vs Hazelcast
You can access logs with:
docker exec -it hazelseed bash #or any other node
cd /var/log/supervisor
Just clone it and execute:
sbt run
Then choose the cache you need. For cassandra you need host named "dseseed" with sever-part. For Hazelcast you can create seed-node "hazelseed" to discover a cluster. Measurements will be reported every 15 seconds right to your console.
#Hazelcast-Cassandra comparison
| Feature | Hazelcast 3.5.3 | DSE (Cassandra+Solr+Spark) |
|---|---|---|
| AP-mode | yes | yes |
| CP-mode | no | yes* |
| Split-brain tolerance | yes (merge) | yes (merge) |
| ReactiveAPI | partially (no queries) | yes |
| CRDT | no (manual merge) | yes |
| Queries | yes | CQL (restricted), Solr (full) ** |
| Write-Through | yes | yes (robust write) |
| Write-Behind | yes | yes |
| Locks | yes | no (it has only CAS-like updates)*** |
| EventListeners | ContinuousQuery (clent) | ServerSide: Triggers, SparkStreams |
| EmbeddedPersistence | no | yes**** |
| Easy Maintanance | yes | no |
| Package Size | ~7Mb | ~700Mb |
`* you can setup N/R/W to choose between AP/CP
`** Solr is based on Apache Lucene
`*** it's called lightweight transactions and based on Paxos
`*** you can also choose which data are more likely to be written to disk or even turn it off