Curated developer articles, tutorials, and guides — auto-updated hourly


I've worked on projects where getting the right data was the bottleneck. You can't build features...


Building a high-performance Polymarket trading bot requires mastering its unique hybrid architecture...
![[System Design] Part 4 — Amazon CONDOR & Anticipatory Shipping](https://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fcr7y22086qgqejku95th.png)

Amazon Fulfillment: The Three Tiers of Optimization Amazon processes billions of orders...


Building real-time blockchain indexers means wrestling with hard choices: speed vs. simplicity, RPC....
![[System Design] GraphHopper Distance Matrix: Self-Host OSRM vs Haversine for Route Optimization](https://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Fyoo5j6x1kubw2zbx6ayz.png)

Series context: This is Part 7 of the E-commerce Order Allocation series. The distance matrix built....


As software engineers, we often architect solutions in a virtual ideal: fast networks, elastic...


New Jersey drivers complain about traffic the way other people complain about weather: constantly,.....


A common way to design an application is to begin with its nouns: User Product Order Payment ...


There is a quiet assumption running through most conversations about AI security: that the danger is...


Everyone keeps predicting that AI eliminates the junior engineer first. I think that prediction aims...


The Counterintuitive Truth: Feature Flags Are Not Config Files Most engineers first...


From Feature Delivery to Platform Engineering Most engineering articles focus on building...


When organizations scale, a simple monolithic architecture often becomes difficult to maintain,...
![[System Design] Chapter 2: Flash Sale Engine - Solving Overselling and Hot Keys](https://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Ftcc9g1eklyeiml6n4ig2.png)

← Series hub ← Prev • Next → Chapter 2: Flash Sale Engine - The Mystery Behind Redis and Ho...


I bombed a system design interview last year — not because I didn't know the architecture, but...
![[System Design] Banking Microservices Architecture: Event Sourcing, CQRS & Saga Patterns for Core Banking](https://media2.dev.to/dynamic/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Ffvfgdk9mzn7mnu19u8v7.png)

Series context (Part 4 of 8): This article assumes familiarity with ACID transactions and database.....


Part one of a short series on who actually controls the audio coming out of your Android phone, and....


Coordinate independent agent CLIs without LangGraph or a message broker — atomic Task/Result files, ...


Had yet another conversation yesterday with a team burning themselves on a Redis cache...


The Quest Begins (The "Why") I was knee‑deep in a side‑project that needed a global rate...


If your LLM costs are climbing, the instinct is almost always the same: swap to a cheaper model....


Ask an AI to build a feature. It will forget one block. Every time. Try it. Tell Claude to build vid...


The Quest Begins (The "Why") Honestly, I was just trying to keep my tiny side‑project from...


The Quest Begins (The “Why”) Picture this: I’m hunched over my laptop at 2 a.m., sipping...