From Unified Logging with Fluentd by Phil Wilkins

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Fluentd is a powerful log management tool that seamlessly handles messy logging data, from operational errors, to application events, and security events. It decouples log data, such as SNMP or slow database queries, from backend systems and easily sends it where it needs to go—thanks to 500+ flexible plugins covering all major services. Unified Logging with Fluentd teaches you how to use this free and open source tool to make your log processing a real asset for your application. You’ll learn how to configure Fluentd to solve common log problems, and how proper log management can improve performance and make management of software solutions easier. Through useful examples like sending log driven events to Slack, you’ll get hands-on experience applying structure to your unstructured data.