What is DTM
DTM, which stands for "Distributed Transactions Manager," is a specialized framework designed to handle distributed transactions across different services in an application. The main goal of DTM is to ensure data consistency, even when multiple services are involved in a transaction. It supports various transaction patterns, such as Saga, TCC, XA, 2-phase message, and Outbox. These patterns allow DTM to be versatile and adaptable to numerous application scenarios.
Who's Using DTM
DTM has already gained recognition and is in use by notable companies, including Tencent, ByteDance, and Ivydad, among others. These implementations demonstrate the framework's effectiveness in real-world scenarios.
Features of DTM
Some key features that make DTM a powerful tool include:
- Support for Multiple Transaction Modes: DTM supports a wide range of transaction modes like SAGA, TCC, XA, Workflow, and Outbox, which help manage different kinds of distributed transactions.
- Multiple Language Support: DTM is versatile, offering SDKs for several programming languages, including Go, Java, PHP, C#, Python, and Node.js.
- Advanced Outbox Pattern: It offers a more elegant solution for messaging patterns, supporting multiple databases, which enhances reliability and consistency.
- Database Support: DTM works seamlessly with various databases like MySQL, Redis, MongoDB, Postgres, and TDSQL.
- Storage Engine Support: It can work with storage engines such as MySQL, Redis, BoltDB, and MongoDB.
- Microservices Architecture Compatibility: DTM integrates well with architectures like go-zero, go-kratos, and Polaris.
- High Availability and Scalability: DTM is designed to offer high availability and can be easily scaled horizontally.
Application Scenarios
DTM is highly effective in several application scenarios where data consistency is crucial:
- Cache Management: It ensures both final and strong cache consistency.
- Flash Sales Inventory Management: DTM can precisely manage inventory, even during high-demand flash sales, ensuring accuracy without manual intervention.
- Complex Order Systems: It simplifies the architecture of non-monolithic order systems.
- Event Publishing and Subscription: DTM implements an advanced outbox pattern, enhancing event-driven architectures.
Quick Start with DTM
To get started with DTM, one can quickly clone the repository and run a simple example:
-
Running DTM:
git clone https://github.com/dtm-labs/dtm && cd dtm go run main.go -
Example Scenario:
For instance, to manage an inter-bank transfer using separate microservices for 'transfer out' and 'transfer in' operations:
git clone https://github.com/dtm-labs/quick-start-sample.git && cd quick-start-sample/workflow-grpc go run main.go
This example illustrates how DTM handles distributed transactions through a workflow.
More Examples and Usage
For more practical examples and usage scenarios, the dtm-labs/quick-start-sample repository offers additional resources. It covers aspects like database interactions, transaction compensation, and rollback scenarios.
Rollback Feature
DTM is designed to handle failures gracefully by rolling back transactions. If a failure occurs in any part of a transaction, DTM ensures that the appropriate compensatory actions are taken, ensuring the transaction is rolled back successfully.
If this project interests you or proves to be helpful, consider giving it a star on GitHub!
DTM exemplifies robust distributed transaction management, ensuring data consistency and reliability across diverse service architectures. Through its powerful features and extensive support, it stands out as a critical component in modern application development.