Common Patterns and Anti-patterns in Venture Architectures

🔑Using events as a form of data distribution can lead to leaking internal information and should be carefully considered.

💡Different forms of events, such as data-centric and behavior-centric, can impact the way data is distributed.

📊Processing messages in order can be beneficial for data distribution and maintaining consistency.

🔁Using events as commands and trying to treat events as having a response can lead to unnecessary complexity.

❌Not everything needs to be an event, and it's important to understand when a simpler approach, such as a synchronous call, is more appropriate.

What are the risks of using events as a form of data distribution?

—Using events as data distribution can result in leaking internal information, impacting system security. It's important to carefully consider what events are exposed and to ensure that internal details are not inadvertently made accessible.

How can processing messages in order impact system performance?

—Processing messages in order can decrease system throughput, as the order of processing needs to be maintained. This can result in decreased scalability and potential bottlenecks. It's important to assess whether strict order processing is necessary and if alternative approaches, such as workflows or process managers, can be used instead.

What's the difference between events and commands?

—Events indicate that something has happened, while commands request something to happen. Events are generally owned by the publisher, and there can be multiple consumers, whereas commands are owned by the consumer, and there is typically only one consumer for each command.

When should events be used as commands?

—Using events as commands can be appropriate in cases where asynchronous messaging is necessary, and a response is expected. However, it's important to ensure that the benefits outweigh the added complexity, and that it aligns with the overall system architecture.

Is it necessary to process messages in strict order?

—Processing messages in strict order is not always necessary. It depends on the context and the requirements of the system. If maintaining strict order is not essential, alternative approaches, such as handling out-of-order messages through workflows or process managers, can provide more flexibility and scalability.

00:00Introduction to common patterns and anti-patterns in venture architectures

01:32Using events as a form of data distribution and the risks of leaking internal information

03:08Different forms of events, such as data-centric and behavior-centric, and their impact on data distribution

05:52Processing messages in order and its benefits and drawbacks

07:47Treating events as commands and the potential complexity it introduces

09:33Not everything needs to be an event, and the importance of understanding when a simpler approach is more appropriate

10:28Conclusion and summary of the key insights