Joint table ownership in microservices occurs when multiple services perform write operations on the same table. Right off the bat, I’ll make it clear that no one likes joint ownership of tables. A few reasons for this are: However, it’s not always possible to avoid joint table ownership as we Read more…
If you are a doctor treating a patient and want access to her medical record, you’d want the details to be available at all times. If it’s an emergency case, there can be absolutely no slippage. The data should be highly-available as it might be a matter of life and Read more…
Distributed systems encourage you to break apart data and services. This means you’ve to think about data ownership in a distributed system more deeply as compared to a traditional system. The common advice tends to proclaim that a service should own its data and that anyone wanting to access the Read more…
Fixed Window Rate Limiting algorithm is the simplest algorithm for applying rate limits out there. Though this algorithm may not be the best choice for large-scale distributed systems, understanding it is useful because it clarifies the concepts around Rate Limiting. In case you are interested in understanding the concept of Read more…
Code reuse between multiple services is a hotly debated topic in software engineering. You have some people fighting tooth and nail to prove that DRY (Don’t Repeat Yourself) is the way to go. On the other end of the spectrum, the proponents of the “share nothing” philosophy are ready to Read more…
Rate limiting is the concept of controlling the amount of traffic being sent to a resource. How can you achieve this control? By means of a rate limiter – a component that lets you control the rate of network traffic to an API server or any other application that you Read more…
System Design has its own language. And just like with any language, it requires a specific terminology for people to communicate ideas with each other. This is where knowledge of core concepts of System Design becomes extremely useful. In this post, I will walkthrough the concepts and explain what they Read more…
Statement-based replication is a form of database replication. In this post, I’m going to explain how it works, its advantages, and its limitations. Understanding Statement-Based Replication Let’s say you are going for leader-based replication and there are multiple followers under a single leader node. With statement-based replication, two things will Read more…
Data is the backbone of every organization out there. Ensuring that your data is always available is probably the most important consideration for any business. If the application’s data is not available when customers need it, chances are that they won’t be your customer much longer. This is where Database Read more…
We all know that duplicate messages are dangerous – in your application as well as your life. Suppose you are the one who is responsible for making coffee for everyone in your family. As per the house rules, if someone wants to have coffee, they need to write it down Read more…