Colophon

How we build.

Our architecture philosophy and the principles behind CheckUpstream. We care about type safety, edge performance, and reliability at every layer.

Every layer of CheckUpstream is designed for edge performance and type safety. We don't name specific vendors — instead, we describe our architectural choices and why they matter for monitoring reliability.

Language

TypeScript

End-to-end type safety across the stack

React

Component-based UI

Architecture

Monorepo

Shared packages, single source of truth

Edge-first

Distributed compute close to your users

Type-safe APIs

Full-stack type inference, no code generation

Database

Distributed SQL

Low-latency reads at the edge

Type-safe ORM

Schema-driven queries with zero runtime overhead

Reliability

Error tracking

Real-time alerts with full stack traces

Performance monitoring

Core web vitals and API latency

Infrastructure

Edge hosting

Serverless functions with global distribution

Distributed workers

Health-check probes across multiple regions

Rate limiting

Serverless key-value store at the edge

SDKs

TypeScript

Node.js, Deno, Bun

Python

pip install checkupstream

go get github.com/checkupstream/sdk-go

PHP

Composer package

Ruby

RubyGem

Rust

Cargo crate

Java

Maven Central

.NET

NuGet package

Made by humans.

CheckUpstream is built by a small team that cares about reliability. We think your software deserves to know when its dependencies break.

humans.txt