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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 962 GitHub stars and 584 GitHub forks. Here’s a link to Log4j's open source repository on GitHub

Who uses Log4j?

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

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

Log4j Integrations

Java, Spring Boot, Apache Maven, Dropwizard Metrics, and LogMx are some of the popular tools that integrate with Log4j. Here's a list of all 5 tools that integrate with Log4j.
Pros of Log4j
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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.
Seq
Seq is a self-hosted server for structured log search, analysis, and alerting. It can be hosted on Windows or Linux/Docker, and has integrations for most popular structured logging libraries.
See all alternatives

Log4j's Followers
27 developers follow Log4j to keep up with related blogs and decisions.
Diego Sucaria
Bagavathiraja Thangaraj
David Miller
Simon Petersen
sandeep a
Sachin Khandge
Tran Hoang
varunachar
Krasae Wongsawas
Banzaroo Gaming