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Barry Oglesby
Barry Oglesby

24 Followers

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Jan 21, 2022

Logging Apache Geode Client Queues

Introduction Apache Geode provides a mechanism for client applications to subscribe to events of interest. This is done either through interest registration or continuous queries. In either case, once a client enables subscriptions and connects to the server members, a representation of that client called a CacheClientProxy is created on one…

Apache Geode

3 min read

Logging Apache Geode Client Queues
Logging Apache Geode Client Queues
Apache Geode

3 min read


Oct 17, 2021

Creating and Registering a Custom JMX MBean for Apache Geode

Introduction Apache Geode provides a collection of JMX MBeans that are useful for monitoring the health of a DistributedSystem. Each member of the DistributedSystem registers several JMX MBeans including: The AsyncEventQueueMXBean which provides AsyncEventQueue attributes like the queue size and overflowed entries. The CacheServerMXBean which provides CacheServer operations like getting client…

Apache Geode

4 min read

Creating and Registering a Custom JMX MBean for Apache Geode
Creating and Registering a Custom JMX MBean for Apache Geode
Apache Geode

4 min read


Sep 12, 2021

Logging Apache Geode PartitionedRegion Primary and Secondary Bucket Locations

Introduction An Apache Geode PartitionedRegion partitions its entries into buckets among all the servers where it is defined. Properties that affect the number and location of the buckets include total-num-buckets and redundant-copies. The total-num-buckets configures the number of buckets across all the members of the DistributedSystem. The redundant-copies configures the number…

Apache Geode

3 min read

Logging Apache Geode PartitionedRegion Primary and Secondary Bucket Locations
Logging Apache Geode PartitionedRegion Primary and Secondary Bucket Locations
Apache Geode

3 min read


Aug 9, 2021

Displaying Current and Historical Apache Geode Statistics

Introduction Apache Geode produces a variety of statistics in each member of the DistributedSystem. See my article here for the most useful ones. There are several ways to display these statistics. The main way to display historical statistics (contained in a gfs archive file) is to use the Visual Statistics Display…

Apache Geode

3 min read

Displaying Current and Historical Apache Geode Statistics
Displaying Current and Historical Apache Geode Statistics
Apache Geode

3 min read


Published in CodeX

·Jun 24, 2021

Most Useful Apache Geode Statistics

Introduction Apache Geode produces a variety of statistics in each member of the DistributedSystem including statistics for: Operating System Java Virtual Machine (JVM) JVM heap memory JVM garbage collection Peer to peer requests Client to server requests Cache performance If the statistic-sampling-enabled property is set to true, then the statistics are…

Apache Geode

9 min read

Most Useful Apache Geode Statistics
Most Useful Apache Geode Statistics
Apache Geode

9 min read


May 23, 2021

What is Stored in an Apache Geode Region

Introduction The Region is the data structure that stores entries in a Cache. Its entries are RegionEntry instances and are stored in a customized ConcurrentHashMap called CustomEntryConcurrentHashMap. …

Apache Geode

5 min read

What is Stored in an Apache Geode Region
What is Stored in an Apache Geode Region
Apache Geode

5 min read


Published in CodeX

·Mar 23, 2021

Transmitting Deltas Between Different Apache Geode Distributed Systems

Introduction Apache Geode provides a Delta interface that facilitates serializing the changes to an object between two JVMs rather than the entire object when changes are made to that object. For large objects, this provides an optimization that is supported from: clients to servers servers to servers in the same DistributedSystem …

Apache Geode

5 min read

Transmitting Deltas Between Different Apache Geode Distributed Systems
Transmitting Deltas Between Different Apache Geode Distributed Systems
Apache Geode

5 min read


Jan 19, 2021

Calculating the Size of an Apache Geode GatewaySender Queue

Introduction The in-memory size of an Apache Geode GatewaySender queue can be used to determine the amount of queue memory to allocate for that GatewaySender. The ObjectGraphSizer can be used to calculate the size of any object in bytes and also to create a histogram of the object being sized. It…

Apache Geode

4 min read

Apache Geode

4 min read


Published in The Startup

·Nov 29, 2020

Calculating Apache Geode GatewaySender Event Queue, Transmission and Processing Times

Introduction Calculating queue, transmission and total processing times for Apache Geode GatewaySender events can be helpful for WAN resource capacity planning like the amount of queue memory to allocate and the number of dispatcher threads to configure. Unfortunately, this data is not readily available in Apache Geode out-of-the-box. This article describes…

Apache Geode

3 min read

Calculating Apache Geode GatewaySender Event Queue, Transmission and Processing Times
Calculating Apache Geode GatewaySender Event Queue, Transmission and Processing Times
Apache Geode

3 min read


Oct 12, 2020

Implementing a Spring Boot JMX Notification Listener for Apache Geode

Introduction Apache Geode issues JMX Notifications for specific system events and system alerts (e.g. warning and severe messages). JMX Notifications include but are not limited to: when members join and leave the DistributedSystem when Regions are created and destroyed when GatewaySenders are created, started and stopped when warning or above messages…

Apache Geode

3 min read

Apache Geode

3 min read

Barry Oglesby

Barry Oglesby

24 Followers

Software Engineer at VMware.

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