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Like Prometheus, but for logs (by the makers of Grafana)
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What is 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.
Loki is a tool in the Logging Tools category of a tech stack.
Loki is an open source tool with 8.1K GitHub stars and 627 GitHub forks. Here’s a link to Loki's open source repository on GitHub

Who uses Loki?

6 companies reportedly use Loki in their tech stacks, including BitPhy, Atalaya, and 5G Systems.

20 developers on StackShare have stated that they use Loki.

Why developers like Loki?

Here’s a list of reasons why companies and developers use Loki
Top Reasons
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Loki Alternatives & Comparisons

What are some alternatives to Loki?
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.
CocoaLumberjack is a fast & simple, yet powerful & flexible logging framework for Mac and iOS.
It is the easiest way to collect, search, analyze and alert on structured log data. Structured logging preserves the individual property values, as well as the text, associated with each event.
We built uno, a small tool similar to uniq (the UNIX CLI tool that removes duplicates) - but with fuzziness. uno considers two lines to be equal if their edit distance is less than a specified threshold, by default set to 30%. It reads from stdin and prints the deduplicated lines to stdout.
Zap takes a different approach. It includes a reflection-free, zero-allocation JSON encoder, and the base Logger strives to avoid serialization overhead and allocations wherever possible. By building the high-level SugaredLogger on that foundation, zap lets users choose when they need to count every allocation and when they'd prefer a more familiar, loosely typed API.
See all alternatives

Loki's Followers
40 developers follow Loki to keep up with related blogs and decisions.
Mykhailo Molokov
Wayne Sun
Jona Koudijs
Chr Zu
John Alton
Palmtree  labs