https://www.scale-matrix.com/knowledgeblogs daily 0.75 2024-11-25 https://www.scale-matrix.com/knowledgeblogs/scaling-a-stateful-system monthly 0.5 2024-10-27 https://images.squarespace-cdn.com/content/v1/66dc3a18d7d5a83babc41383/74b38548-312d-4bb7-88ed-4bb1a123f1b1/Screenshot+2024-10-14+at+5.34.43%E2%80%AFAM.png Knowledge Blogs - Towards An Asynchronous Architecture - In this design, order state transitions are managed as follows: CREATED: The order is initially created in the database, and an event is published to the message bus. RESERVED: The inventory service consumes the event and tries to reserve inventory. If successful, the state moves to RESERVED. If inventory is unavailable, the state moves to CANCELLED. PAID: Once inventory is reserved, the payment process is initiated. SHIPPED and DELIVERED: Subsequent states like shipping and delivery follow, potentially also driven by asynchronous events. https://images.squarespace-cdn.com/content/v1/66dc3a18d7d5a83babc41383/dcbcb940-16ca-4f83-9f0c-e1c7926b03b6/Screenshot+2024-10-14+at+4.57.47%E2%80%AFAM.png Knowledge Blogs - Towards An Asynchronous Architecture - In the initial iteration of our order processing system, everything is designed to happen synchronously. Let’s break down the core components and workflow: When a customer places an order, the backend API writes the order to a MySQL database and then immediately makes a call to the inventory service to reserve the necessary items. If the inventory reservation is successful, the order proceeds to the next stage (e.g., payment and shipping). If not, the order is canceled. https://images.squarespace-cdn.com/content/v1/66dc3a18d7d5a83babc41383/10df6708-d6f1-4205-8e81-db5d4f27d860/Screenshot+2024-10-14+at+5.51.47%E2%80%AFAM.png Knowledge Blogs - Towards An Asynchronous Architecture - Decoupled Processing: Instead of waiting for the inventory reservation to complete, the order mgmt service simply emits an event to a message bus topic (e.g., "OrderCreated"). A subscriber to these events then processes reservations asynchronously and updates the order state from CREATED to RESERVED. This decoupling allows the order service to immediately respond to the user, significantly improving response times. Scalability with Message Bus: The message bus's partitioning mechanism allows the inventory service to scale horizontally. Multiple instances of the inventory service can consume events concurrently, distributing the load and ensuring high throughput, even during peak times. Increased Resilience: With the message bus acting as a buffer, the inventory service can process events at its own pace. If the inventory service is temporarily down, the messages remain in the bus, allowing for eventual processing once the service is back up. This significantly reduces downtime and improves the system’s overall resilience. Retry and Fault Tolerance: The message bus's event retention and replay capabilities provide an in-built retry mechanism. If inventory reservation fails due to a temporary issue, the event can be retried until it succeeds. This makes the system more robust to transient failures without negatively impacting the user experience. Loosely Coupled Services: By using a message bus to publish and consume events, the order service and inventory service become loosely coupled. This makes the system easier to maintain and modify, as changes to the inventory service do not directly affect the order service. https://www.scale-matrix.com/knowledgeblogs/gettheproblemright monthly 0.5 2024-10-27 https://images.squarespace-cdn.com/content/v1/66dc3a18d7d5a83babc41383/7955bc3e-1938-4e9c-a0bb-404f18a740a0/Screenshot+2024-09-13+at+5.48.29%E2%80%AFAM.png Knowledge Blogs - Get the Problem Right, the Solution Will Follow - Deeply understanding the problem is perhaps the most critical, yet underestimated, step in solving complex business challenges. Skipping this step is like trying to build a skyscraper on a shaky foundation—it might stand for a while, but cracks will inevitably appear. In the fast-paced world of tech, where new frameworks and shiny tools emerge daily, it's all too easy for teams to dive headfirst into the solution space, focusing on implementation before grasping the problem. But no matter how cutting-edge or "innovative" the solution may be, if it’s misaligned with the core issue, it’s doomed to fail. https://images.squarespace-cdn.com/content/v1/66dc3a18d7d5a83babc41383/4756e4c0-4e19-4aa8-be9d-cf3247f86446/Screenshot+2024-09-15+at+1.52.12%E2%80%AFAM.png Knowledge Blogs - Get the Problem Right, the Solution Will Follow - These examples highlight a critical but often overlooked truth in tech: rushing to implement solutions without fully grasping the problem or misplacing feature priorities can lead to wasted efforts and missed opportunities. Whether it’s misdiagnosing latency issues, building a product that fails to solve the real pain points, or focusing on secondary features first, the lesson is unmistakable—technical success hinges on understanding the problem, setting the right priorities, and delivering what truly matters. By taking the time to decode the problem from the outset, teams not only save time and resources but also create solutions that resonate with customers and drive meaningful results. 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