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LogQL cheat sheet

LogQL cheat sheet

LogQL Cheat Sheet This cheat sheet highlights different patterns for querying FusionReactor LogQL. Introducing FusionReactor Log query Language FusionReactor queries log with its unique log query language called LogQL, often distributed as grep besides labels for filtering. There are two … Read More

Parse Variable Patterns using Regex

Parse Variable Patterns using Regex

What is parsing? Parsing is a very important process when handling logs because it lets users filter logs in useful ways. Unstructured logs can easily be shared into attribute (key/value) pairs, which helps to create improved alerts and charts. There … Read More

How to Parse JSON data in JavaScript

How to Parse JSON data in JavaScript

Assuming that you’ve used a web app before, there is a strong possibility that it uses JSON format to create a framework, store and transmit data between its servers and connected devices. JavaScript Object Notation, which is popularly known as … Read More

fusionreactor 8.7.7 released

FusionReactor 8.7.7 Released

FusionReactor 8.7.7 has been released. With enhancements including improved alert emails, SpringBoot fixes, and more. Enhancements to Crash Protection API and DB time can now be found in both the request log and Crash Protection emails, making it easier to … Read More

New beta release – log alerting

Our most powerful alerting engine Log Alerting is now in beta and all beta users will immediately have access to this powerful query-based alerting engine. Set alerts on FusionReactor logs and ingested third-party logs. Your log data can be used … Read More

How to use Log Dashboards to gain actionable insight

How to use Log Dashboards to gain actionable insight

How to use Log Dashboards to gain actionable insight Logs have many valuable functions; they contain a considerable amount of data. Using log query languages such as LogQL allows you to get fantastic insights, but they rely on running queries … Read More

diagnosing a server attack

Diagnosing a server attack using logs

Diagnosing a server attack using logs  Imagine that your server is under attack. How would you diagnose the issue and understand its impact? You may have been aware of previous attacks and have seen significant spikes coming into your server. … Read More

diagnosing a server crash

Using logs to easily diagnose a server crash

Reasons for a server crash Java can crash in several ways and for several reasons. Sometimes it’s not easy to diagnose a server crash. For example, Your JVM may still be operational, but you cannot process requests anymore. Part of your application breaks … Read More

finding hidden errors, hidden exceptions

Finding hidden exceptions in your application

What are hidden errors and why do you need to find them? Hidden exceptions can occur by design. For example, adding a try-catch block into your code is an easy way to prevent errors from displaying to your users and … Read More

what are logs

What are logs and why do I need to monitor them?

What are logs, and why do I need to monitor them? Let’s start by clarifying the basics. Logs are recordings of events that have taken place while an application runs. Some are automatically created, and some are explicitly developed – … Read More