mgo
A high-performance, maintained fork of the mgo MongoDB driver for the Go programming language.
What is mgo?
globalsign/mgo is a maintained fork of the popular mgo library, which is a MongoDB driver for the Go programming language. It enables Go applications to connect to, query, and manage MongoDB databases with a focus on performance, reliability, and support for modern MongoDB features. The project addresses various bugs and limitations from the original driver while adding enhancements like better connection handling and extended BSON support.
Go developers building applications that require persistent data storage with MongoDB, particularly those needing improved performance, stability, or access to newer MongoDB features not supported in the original mgo driver.
Developers choose this fork for its active maintenance, performance optimizations, and the inclusion of critical fixes and features from community pull requests that may be stalled in the upstream repository. It offers a more reliable and feature-complete driver for production Go applications using MongoDB.
Overview
The MongoDB driver for Go
Use Cases
Best For
- Building high-performance Go services that use MongoDB as a backend database
- Migrating existing mgo-based applications to newer MongoDB versions (3.4+)
- Applications requiring efficient connection pooling and low memory footprint
- Implementing real-time features using MongoDB change streams in Go
- Projects needing robust BSON marshalling/unmarshalling with streaming support
- Teams looking for a well-maintained, community-improved fork of the original mgo driver
Not Ideal For
- Projects requiring official, vendor-supported MongoDB drivers for enterprise compliance or guaranteed long-term updates
- Applications targeting MongoDB 4.0+ in production, as support is experimental and may lack full feature compatibility
- Teams needing high-level abstractions or built-in ORM features, as it focuses on low-level driver improvements
Pros & Cons
Pros
Implements buffer reuse and improved connection handling to reduce memory footprint and garbage collection pressure, as detailed in performance optimization changes.
Includes a standalone BSON package with streaming encoders and better type handling, improving encoding/decoding performance and supporting features like integer map keys.
Features configurable timeouts, graceful recovery from server unavailability, and maxIdleTimeout for pooled connections, enhancing stability in production environments.
Supports MongoDB versions 3.0 to 3.6 with added features like change streams, collations, and read-only views, plus community-driven fixes for bugs.
Cons
MongoDB 4.0 support is experimental, which may pose risks for applications needing cutting-edge features or production stability on newer versions.
As a fork of the original mgo, it inherits architectural constraints and might not align with MongoDB's official driver roadmap, leading to potential compatibility gaps.
Focuses on low-level improvements without built-in ORM or abstraction layers, requiring more manual work for complex data modeling compared to some alternatives.
Frequently Asked Questions
Related Projects
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mongo-go-driverThe Official Golang driver for MongoDB
rueidisA fast Golang Redis client that supports Client Side Caching, Auto Pipelining, RDMA, etc.
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