head to head · open source
Vector vs resilience4j
Vector has 22,793 GitHub stars, 2,371 forks, 2,512 open issues and last shipped yesterday. resilience4j has 10,800 stars, 1,538 forks, 306 open issues and last shipped 6 days ago. Vector leads on adoption by 111% (22,793 vs 10,800 stars). Vector is written in Rust under MPL-2.0; resilience4j is written in Java under Apache-2.0. Vector has attracted 10% as many forks as stars, resilience4j 14%. Vector was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (metrics), so they are genuine substitutes rather than adjacent tools.
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
| Vector | resilience4j | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 11K |
| License | MPL-2.0 | Apache-2.0 |
| Written in | Rust | Java |
| Last push | 2026-11-04 | 2026-10-30 |
| Forks | ⑂ 2.4K | ⑂ 1.5K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Vector if
- You weight community size — 23K stars and counting
- You want the MPL-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick resilience4j if
- You want the resilience4j 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 resilience4j fits your workflow better
About Vector
Quickstart • Docs • Guides • Integrations • Chat • Download • Container Images • Rust Crate Docs What is Vector? Vector is a high performance, end to end (agent & aggregator) observability data pipeline that puts you in control of your observability data. [Collect][docs.sources], [transform][docs.transforms], and [route][docs.sinks] all your logs and metrics to any vendors you want today and any other vendors you may want tomorrow. Vector enables dramatic cost reduction, novel data enrichment, and data security where you need it, not where it is most convenient for your…
read the full Vector overview →
About resilience4j
= Fault tolerance library designed for functional programming :author: Robert Winkler and Bohdan Storozhuk :icons: :toc: macro :numbered: 1 ifdef::env github[] :tip caption: :bulb: :note caption: :information source: :important caption: :heavy exclamation mark: :caution caption: :fire: :warning caption: :warning: endif::[] image: Status"] image: image: image: License 2", link=" image: link=" image: link=" image: link=" image: link=" image: link=" image: link=" image: toc::[] == Introduction Resilience4j is a lightweight fault tolerance library designed for functional programming. Resilience4j provides higher…
read the full resilience4j overview →
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Frequently asked questions
Is Vector or resilience4j more popular?
Vector has 22,793 GitHub stars and resilience4j has 10,800. Vector has the larger community by that measure.
Are Vector and resilience4j free?
Both are open source. Vector is licensed under MPL-2.0 and resilience4j under Apache-2.0. Neither carries a licence fee.
What is the difference between Vector and resilience4j?
Vector is written in Rust and resilience4j 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, Vector or resilience4j?
Choose Vector if you want the larger community (22,793 stars) or its MPL-2.0 licence terms. Choose resilience4j if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.