Hazelcast Tip: Use IMap.lock or ILock.lock?
When you call mapLocks.unlock(theKey), your lock is auto-garbage-collected. This is simpler, faster and cleaner. For ILocks, you have to call destroy as all ILock objects are kept in memory. If...
Hazelcast with hundreds of clients
...the following points are important: - Stability of your network environment. In AWS, hosting clients and servers in same zones will help you. - The server should be powerful enoug......
Hazelcast: When to increase Partition Count?
Hazelcast stores data in partitions. Default partition number is 271. You can increase the partition number, if data size per partition is bigger than 100 Mb. Why? By consistent hashing*...
For Faster Hazelcast Queries
Here some tips on improving Hazelcast query performance: 1- Add indexes for queried fields. For queries with ranges (gt, lt, between) you can use ordered index. IMap imap = Hazelcast.getMap("employees");...
Hazelcast Executor Service: Thread configuration
At below configuration; max 4 threads will serve for e1, max 8 threads will serve for e2. There can be max 40 tasks of e1 waiting in the queue. There...
Hazelcast open source in-memory data grid secures $21.5 million funding, expands platform to real-time streaming data
Thread Per Core
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Hazelcast Powers Real-Time Fraud Detection
Hazelcast Powers Real-Time Fraud Detection How a top credit card issuer avoided $100M in losses annually while improving fraud detection performance $100M losses avoided annually 0 downtime Challenge Lost revenue...
Blue/Green Deployments
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Hazelcast Autoscaling with Horizontal Pod Autoscaler (HPA)
...helm install --name prometheus stable/prometheus --namespace monitoring Install Prometheus Adapter Create a custom hazelcast-values.yaml rules: default: true custom: - seriesQuery: '{__name__=~"jvm_memory_bytes_(used|max)",area="heap",kubernetes_name=~"hazelcast.*"}' seriesFilters: - is: ^jvm_memory_bytes_(used|max)$ resources: overrides: kubernetes_pod_name: {resource: "pod"}...