flowgraph by vectaport
Flowgraph package for scalable asynchronous system development
About flowgraph
From the project's README at github.com/vectaport/flowgraph. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://godoc.org/github.com/vectaport/flowgraph) Wiki Slides from Minneapolis Golang Meetup, May 22nd 2019 Overview
Flowgraphs are built out of hubs interconnected by streams. The hubs are implemented with goroutines that use select to wait on incoming data or back-pressure handshakes. The data and handshakes travel on streams implemented with channels of empty interfaces for forward flow (interface{}) and channels of empty structs for back-pressure (struct{}).
The user of this package is completely isolated from the details of using goroutines, channels, and select, and only has to provide the empty interface functions that transform incoming data into outgoing data as needed for each hub of the flowgraph under construction. It includes the ability to log each data flow and transformation at the desired level of detail for debugging and monitoring purposes.
The package allows for correct-by-construction dataflow systems that avoid deadlock and gridlock by using back-pressure to manage empty space. It also supports looping constructs that can operate at the same efficiency as pipeline structures using channel buffering within the lo
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 65 | github.com/vectaport/flowgraph |
| GitHub forks | 9 | github.com/vectaport/flowgraph |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 7.7 years | since Aug 2018 |
| Last commit | 4 months ago | Dec 23, 2025 |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
What people say on Hacker News
Ready to self-host flowgraph?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.