Hatchet Introduction

Hatchet is a distributed, fault-tolerant task queue that solves scaling challenges like concurrency, fairness, and rate limiting for building more resilient web applications.
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What is Hatchet

Hatchet is an open-source platform designed to simplify the process of building distributed web applications. It provides a managed task queue that replaces traditional message brokers and pub/sub systems, offering developers a solution to common scaling problems. Hatchet allows users to distribute functions between a set of workers with minimal configuration, handling the complexities of task scheduling, retries, and monitoring. The platform supports multiple programming languages including Python, TypeScript, and Go, making it versatile for various development environments.

How does Hatchet work?

Hatchet operates as an orchestrator, managing the execution of workflows while individual steps are executed by user-defined workers. It utilizes a low-latency queue to handle real-time interactions and mission-critical tasks. Workflows in Hatchet are designed as Directed Acyclic Graphs (DAGs), where each step is a node and dependencies between steps are edges. This structure ensures organized, predictable workflows free from circular dependencies. Hatchet provides features such as customizable retry policies, error handling, scheduling, and spike protection. It also offers incremental streaming, allowing users to subscribe to updates as functions progress in the background worker. The platform includes robust observability tools, enabling users to search, track, and analyze all runs and their associated metrics.

Benefits of Hatchet

By using Hatchet, developers can focus on writing their core application logic without worrying about the complexities of distributed systems. The platform offers improved scalability, allowing applications to handle increased load and traffic spikes more efficiently. Hatchet's durable execution feature enables event replay and manual resumption from specific workflow steps, enhancing system reliability. The built-in observability tools provide deep insights into task execution, making debugging and performance optimization easier. Additionally, Hatchet's support for multiple programming languages and its declarative SDK approach offer flexibility and ease of integration into existing tech stacks. Overall, Hatchet simplifies the development of robust, scalable web applications while reducing the infrastructure management burden on development teams.

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