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What is Log4j?

It is an open source logging framework. With this tool – logging behavior can be controlled by editing a configuration file only without touching the application binary and can be used to store the Selenium Automation flow logs.
Log4j is a tool in the Logging Tools category of a tech stack.
Log4j is an open source tool with 1.3K GitHub stars and 782 GitHub forks. Here’s a link to Log4j's open source repository on GitHub

Who uses Log4j?

Companies
17 companies reportedly use Log4j in their tech stacks, including Intuit, AlphaSense, and internet-of-things.

Developers
65 developers on StackShare have stated that they use Log4j.

Log4j Integrations

Java, Spring Boot, Apache Maven, Coralogix, and Dropwizard Metrics are some of the popular tools that integrate with Log4j. Here's a list of all 6 tools that integrate with Log4j.

Log4j Alternatives & Comparisons

What are some alternatives to Log4j?
SLF4J
It is a simple Logging Facade for Java (SLF4J) serves as a simple facade or abstraction for various logging frameworks allowing the end user to plug in the desired logging framework at deployment time.
Logback
It is intended as a successor to the popular log4j project. It is divided into three modules, logback-core, logback-classic and logback-access. The logback-core module lays the groundwork for the other two modules, logback-classic natively implements the SLF4J API so that you can readily switch back and forth between logback and other logging frameworks and logback-access module integrates with Servlet containers, such as Tomcat and Jetty, to provide HTTP-access log functionality.
Logstash
Logstash is a tool for managing events and logs. You can use it to collect logs, parse them, and store them for later use (like, for searching). If you store them in Elasticsearch, you can view and analyze them with Kibana.
Loki
Loki is a horizontally-scalable, highly-available, multi-tenant log aggregation system inspired by Prometheus. It is designed to be very cost effective and easy to operate, as it does not index the contents of the logs, but rather a set of labels for each log stream.
Bunyan
It is a simple and fast JSON logging module for node.js services. It has extensible streams system for controlling where log records go (to a stream, to a file, log file rotation, etc.)
See all alternatives

Log4j's Followers
62 developers follow Log4j to keep up with related blogs and decisions.