Understanding Distributed Transactions through Order Systems

Transitioning from Monolithic to MSA and Distributed Transactions

As services grow and become more complex, many companies are considering transitioning from their existing monolithic architecture to microservice architecture (MSA). MSA is a modern architecture that guarantees independence and scalability between services, and enables rapid development and deployment, flexible failure response, etc. However, there is an important challenge that must be addressed in this transition. It is the issue of transaction consistency and integrity .

In a monolithic environment, transaction management was relatively simple because all processing could be performed within a single database and transaction boundary. Data from various domains, such as orders, payments, and inventory, were bundled into a single transaction and processed consistently. However, when switching to MSA, each domain was separated into an independent service and a separate database, and it became difficult to guarantee data consistency with the existing transaction processing method .

In this lecture, we will learn about the distributed transaction patterns 2PC, TCC, and SAGA to solve transaction problems in MSA environment that cannot be solved by a single transaction.

In particular, this lecture goes beyond simple theoretical explanations, and starts from a Monolithic structure centered on ordering services, transitions to an MSA environment, and explains what problems actually occur and how to solve them through each pattern, with specific flowcharts, example codes, and practical application tips.

After class

• Understand transactional issues that arise when migrating from Monolithic to MSA.

• You will learn about the structure, pros and cons, and considerations for application of each distributed transaction pattern.

• You will learn design strategies to ensure transaction consistency in practice.

• Concurrency control can be achieved using Lock.

  
  

Things to note before taking the class

Note

• This lecture is not about creating an ordering system, but rather about distributed transactions that are utilized in an MSA environment using a very simple ordering system as an example .

  • For example, it does not cover features such as payments using Payments that can be used for ordering.

• Some lectures (about SAGA patterns) are scheduled to open in August, and the lecture prices may change after the content is added.