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Time in distributed systems
Handling the concept of time in a distributed system is apparently different from having to deal with just one system clock. This post will cover the approach we took when making sure the data gathered from different nodes with different system clocks in different timezones can be linked together.
Filed under: Monitoring
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Distributed tracing
Plumbr is able to trace user interactions across multiple nodes. In this post we describe how we built the solution enabling the distributed tracing.
Filed under: Monitoring
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Staying on top of the JVM crashes
We have discovered, around one out of every 100 JVMs have crashed at least once during the six months when we have been capturing this data. So one of the solutions I have built during 2016 was related to capturing evidence from crashed JVMs. This post is describing the reasons why JVMs get terminated and the different approaches you can take to harvest more evidence in such situations.
Filed under: Java
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Announcing our biggest release so far
We are glad to announce the biggest improvement to our product offering so far. As of today, all our users have access to new Plumbr supporting distributed transactions built using microservices and clustered applications. Along with these two new features, the user interface has also received a major overhaul.
Filed under: Plumbr Product Updates
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Most popular relational databases – 2016 edition
This post analyzes the popularity of relational databases the Java Virtual Machines monitored by Plumbr are connecting to. We are publishing statistics from 2000+ JVMs in regards of which datasources such applications are connecting to.
Filed under: I/O
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MacOS Sierra problems with java.net.InetAddress: getLocalHost()
After upgrading to MacOS Sierra the startup times of our test applications went through the roof. There were no code changes at our side and the problem was embedded in how the new MacOS handles the DNS lookups.
Filed under: Java
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Resource leakages: command pattern to the rescue
Leakages, introduced to applications via poorly designed resource handling, happen to be one of the frequent sources of availability issues. In this post I will describe a simple technique to alleviate the problem. Say hi to an old friend called "command pattern".
Filed under: Memory Leaks
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Why is troubleshooting so hard?
Troubleshooting issues in production systems tends to be tough and unpredictable. In this post I explain the reasons why and offer solutions to alleviate the pain.
Filed under: Monitoring Programming
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Plumbr now monitors the experience of each individual user
Plumbr has so far been able to expose interactions with the application monitored. In addition, performance or availability issues are linked with the root cause by Plumbr. As of today, Plumbr is also able to capture the user identity and link the identity with the monitored transactions.
Filed under: Product Updates
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Most frequent performance bottlenecks
Explore the list of the performance issues with the most impact to end user experience. The data set originates from 1,020 different deployments Plumbr was monitoring during the past three months.
Filed under: Monitoring Performance