head to head · open source
Prometheus vs jetcache
Prometheus has 66,109 GitHub stars, 10,839 forks, 890 open issues and last shipped yesterday. jetcache has 5,613 stars, 1,085 forks, 428 open issues and last shipped 27 days ago. Prometheus leads on adoption by 1,078% (66,109 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 | ★ 66K | ★ 5.6K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-09-17 | 2026-08-22 |
| Forks | ⑂ 11K | ⑂ 1.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Prometheus if
- You weight community size — 66K 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 is an open source monitoring system and time series database, part of the Cloud Native Computing Foundation ecosystem. It collects metrics from configured targets at defined intervals, evaluates alerting rules, and visualizes results. Designed for reliability in dynamic environments, it operates without reliance on distributed storage, ensuring each server node functions independently.
read the full Prometheus overview →
About jetcache
JetCache is an Apache 2.0 Java cache abstraction from Alibaba that gives one uniform Cache API and richer annotations than Spring Cache across Redis, Tair, Caffeine, and in memory caches.
read the full jetcache overview →
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Frequently asked questions
Is Prometheus or jetcache more popular?
Prometheus has 66,109 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 (66,109 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.