Logstash vs Vector
A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.
Vector
High-performance observability data pipeline
| Feature | Logstash | Vector |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 95 · Excellent | 96 · Excellent |
| Category | Monitoring & Status | Monitoring & Status |
| License | Apache-2.0 | MPL-2.0 |
| Language | Java | Rust |
| Setup difficulty | Medium | Medium |
| Min. RAM | 1,024 MB | 64 MB |
| Deployment | docker, kubernetes, binary | docker, kubernetes, binary |
| GitHub stars | ★ 14,949 | ★ 22,606 |
| First released | 2009 | 2019 |
| Replaces | Fluentd | Logstash, Fluentd |
What are Logstash and Vector?
Logstash
Logstash is a server-side data processing pipeline that ingests data from many sources, transforms it, and ships it to a stash such as Elasticsearch. It is a core component of the ELK stack.
- Flexible ingest pipelines
- Hundreds of plugins
- Grok parsing and filters
- Many input and output types
Vector
Vector is a lightweight, ultra-fast tool for building observability pipelines that collect, transform, and route logs, metrics, and traces. It acts as an agent or aggregator with a flexible transformation language.
- Logs, metrics, and traces pipeline
- Very low resource usage
- VRL transformation language
- Many sources and sinks
Logstash vs Vector: key differences
Logstash is written in Java, while Vector is built with Rust. Licensing differs — Apache-2.0 for Logstash versus MPL-2.0 for Vector. Vector is the lighter option, starting around 64 MB of RAM against 1,024 MB for Logstash. Logstash is the more established project (first released 2009), while Vector arrived in 2019.
Why pick each one
Choose Logstash if…
- Powerful transformation language
- Huge plugin library
Watch out for
- Heavy JVM footprint
- Slower than newer agents
Choose Vector if…
- Extremely fast
- Single static binary
Watch out for
- Pipeline config has a learning curve
- No built-in storage
Frequently asked questions
Is Logstash or Vector better?
Neither is universally better. Vector has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Logstash and Vector free and open-source?
Yes. Logstash is licensed under Apache-2.0 and Vector under MPL-2.0. Both can be self-hosted at no software cost.
Can I run Logstash and Vector with Docker?
Logstash: yes. Vector: yes.
Which is lighter on resources, Logstash or Vector?
Vector has the smaller minimum footprint at 64 MB of RAM, compared to about 1,024 MB for Logstash. Real-world usage depends on library size, user count, and enabled features.