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I recently started learning Forward Deployed Engineering alongside my System Design studies. I expected the first lessons to be mostly about Generat…
Your dashboard has a chart that is about 1,200 pixels wide. Behind it sits a table that grows by a few million rows a day. Somebody opens the page,…
A practical way to decide when customer, partner, supplier, and employee portals need a shared core. A supplier changes a delivery date. The ERP sys…
The Quest Begins (The "Why") Ever felt like your application is constantly begging the database for the same piece of data over and over? I remember…
The most common freshness design I see — in my own old code included — is a single stamp at the top: a README that says "last updated 2026-10-01", a…
A legacy system can contain years of business rules, data relationships, and operational behavior that nobody wants to rediscover during a full rewr…
The fastest way to produce a shallow system design: saying "I'll add Redis for caching" and stopping there. Naming "Redis" without explaining what y…
When we horizontally scale an application, adding more instances is only part of the solution. We also need to consider where the application stores…
Tool comparisons usually describe features. Architects of software read them differently: what computes locally, what runs in the cloud, where the a…
The Quest Begins (The "Why") Ever had your API melt down because a sudden traffic spike hammered every endpoint at once? I remember a late‑night dep…
Let’s imagine we have an inventory system. Two of its customers decide to order the last remaining unit of a given product at roughly the same time.…
Let's continue our café story, but now imagine the café has become a popular restaurant with thousands of customers, hundreds of menu items, and a l…
When you first start studying system design and distributed systems, almost everything is taught through static boxes and arrows. Someone draws a Lo…
Recommendation systems in education should not optimize for clicks alone. A learner may enjoy a video without learning from it, complete many exerci…
Quick Answer: A retry storm occurs when deeply nested microservices independently retry failed downstream requests, causing exponential traffic ampl…
MCP vs A2A vs ACP: Open Protocols for Multi-Agent Systems, Compared If you're building a multi-agent system, you've hit this question: how should ag…
Connecting systems is the easy part. The hard part is predictable behavior. The same request should do the same thing every time. Edge cases should…
Designing one transaction lifecycle that can move safely between API-based payouts and operational fulfillment. Payment coverage is rarely uniform.…
Why one balance field cannot represent every financial truth in a virtual-account product. “What is the balance?” sounds like a simple question unti…
Keeping the customer experience stable while payment rails, bank directories, fees, and status semantics change underneath it. The first integration…
Designing a recovery path for asynchronous transactions that remain stuck in processing. Webhooks provide a fast way to learn that an external payme…
Asset tracking sounds simple on paper: figure out what a thing is and where it is. Then you add a second location, a third device type, and a wareho…
I recently completed the AI-Assisted Data Science with BigQuery lab via Google Cloud. While analyzing the final multimodal vector search stage, I fo…
Group chat orchestration is the default pattern for multi-agent systems. It mirrors how human teams work: agents share a conversation, a moderator p…
A warehouse can show 500 units available while the transportation system is still waiting for the previous stock update. That inconsistency can caus…
If you are preparing for software engineering interviews, you have probably heard the term System Design many times. But what does it actually mean?…
Treat Sales Handoffs as Explicit Workflow States A sales workflow should not treat “notification sent” as equivalent to “owner accepted.” Those are…
The Quest Begins (The "Why") I still remember the first time our notification service started to feel like a dragon hoarding gold. We were pushing o…
I had the product definition, user stories, and backlog. Now it was time to design the system. I started with the main responsibilities of Second-Me…
I’m Darshan, a software engineer, founder and builder from India. I spend most of my time building products, experimenting with AI, automating thing…