is_ready
A self-contained binary that waits for multiple network addresses to become available before executing commands.
What is is_ready?
is_ready is a lightweight, dependency-free command-line tool that waits for multiple network addresses (like host:port combinations) to become accessible before executing a command. It solves the problem of coordinating startup order for interconnected services, particularly in containerized environments like Docker, ensuring dependent services (e.g., databases, caches) are ready before applications start.
DevOps engineers and developers working with Docker, Docker Compose, or container orchestration who need to manage service dependencies during startup, especially in multi-service applications.
Developers choose is_ready over alternatives because it can wait for multiple addresses simultaneously (unlike single-address tools) and is a standalone binary with zero external dependencies, ensuring portability and simplicity in constrained environments like minimal container images.
Overview
Wait for multiple services to become available with zero dependencies
Use Cases
Best For
- Waiting for multiple backend services (e.g., a database and a cache) to be ready before starting an application in Docker Compose.
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