head to head · open source
Prometheus vs jetcache
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. jetcache has 5,613 stars, 1,085 forks, 428 open issues and last shipped 10 days ago. Prometheus leads on adoption by 1,092% (66,906 vs 5,613 stars). Prometheus is written in Go under Apache-2.0; jetcache is written in Java under Apache-2.0. Prometheus has attracted 16% as many forks as stars, jetcache 19%. Prometheus was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Prometheus | jetcache | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 5.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-11-02 | 2026-10-24 |
| Forks | ⑂ 11K | ⑂ 1.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Prometheus if
- You weight community size — 67K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick jetcache if
- You want the jetcache feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and jetcache fits your workflow better
About Prometheus
Prometheus Visit prometheus.io for the full documentation, examples and guides. [ ][quay] [ ][hub] Prometheus, a Cloud Native Computing Foundation project, is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts when specified conditions are observed. The features that distinguish Prometheus from other metrics and monitoring systems are: A multi dimensional data model (time series defined by metric name and set of key/value dimensions) PromQL, a powerful and flexible query language to…
read the full Prometheus overview →
About jetcache
Introduction JetCache is a Java cache abstraction which provides uniform usage for different caching solutions. It provides more powerful annotations than those in Spring Cache. The annotations in JetCache supports native TTL, two level caching, and automatically refresh in distrubuted environments, also you can manipulate instance by your code. Currently, there are four implementations: , (not open source on github), (in memory) and a simple (in memory). Full features of JetCache: Manipulate cache through uniform Cache API. Declarative method caching using annotations with TTL(Time To Live) and two level…
read the full jetcache overview →
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Frequently asked questions
Is Prometheus or jetcache more popular?
Prometheus has 66,906 GitHub stars and jetcache has 5,613. Prometheus has the larger community by that measure.
Are Prometheus and jetcache free?
Both are open source. Prometheus is licensed under Apache-2.0 and jetcache under Apache-2.0. Neither carries a licence fee.
What is the difference between Prometheus and jetcache?
Prometheus is written in Go and jetcache in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Prometheus or jetcache?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose jetcache if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.