Distributed-Systems

The Inbox-Outbox Pattern: Ensuring Reliable Messaging in Microservices The inbox-outbox pattern is a design pattern used in microservice architecture to ensure reliable message delivery and data consistency between services. Here’s a brief overview of each pattern: Inbox Pattern Purpose: Ensures that a message was received successfully at least once. How it works: When an application receives data, it persists this data to an inbox table in a database. Another application, process, or service can then read from the inbox table and use the data to perform an operation. This operation can be retried upon failure until it is completed successfully. Outbox Pattern Purpose: Ensures that a message was sent successfully at least once. How it works: When an application needs to send data, it persists this data to an outbox table in a database. Another application or process can then read from the outbox table and use the data to perform an operation. This operation can also be retried upon failure until it is completed successfully. These patterns are particularly useful in distributed systems where services need to communicate reliably and maintain data consistency despite potential failures or network issues. ...

Understanding the Clock-Bound Wait Pattern in Distributed Systems The Clock-Bound Wait pattern is a critical technique used in distributed systems to handle the uncertainty in time across cluster nodes. This pattern ensures that values can be correctly ordered across cluster nodes before reading and writing values, maintaining consistency and reliability. Problem In a distributed system, different nodes may have slightly different clock times. This can lead to inconsistencies when reading and writing values. For example, if two nodes have different clock times, they might read or write different versions of the same value, leading to confusion and inconsistency. ...