Sahil Sudan — System Design & Fintech Engineering https://sahilsudan.com System design concepts explained simply, plus fintech engineering insights. Wed, 03 Jun 2026 12:16:10 GMT https://validator.w3.org/feed/docs/rss2.html https://github.com/jpmonette/feed en © 2026 Sahil Sudan <![CDATA[Rate Limiting — The Bouncer at Your API's Door]]> https://sahilsudan.com/learn/rate-limiting https://sahilsudan.com/learn/rate-limiting Sun, 19 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Load Balancing — Explained Like You're Ordering Food]]> https://sahilsudan.com/learn/load-balancing-explained https://sahilsudan.com/learn/load-balancing-explained Sat, 18 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Horizontal vs Vertical Scaling — Adding More Trucks vs a Bigger Truck]]> https://sahilsudan.com/learn/horizontal-vs-vertical-scaling https://sahilsudan.com/learn/horizontal-vs-vertical-scaling Fri, 17 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Caching — Why Your App Feels Slow (And How to Fix It)]]> https://sahilsudan.com/learn/caching-explained https://sahilsudan.com/learn/caching-explained Thu, 16 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Database Replication — Making Copies of Your Exam Notes]]> https://sahilsudan.com/learn/database-replication https://sahilsudan.com/learn/database-replication Wed, 15 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Database Sharding — Splitting Your Database Like a Pizza]]> https://sahilsudan.com/learn/database-sharding https://sahilsudan.com/learn/database-sharding Tue, 14 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Microservices vs Monolith — One Big Kitchen vs Food Court]]> https://sahilsudan.com/learn/microservices-vs-monolith https://sahilsudan.com/learn/microservices-vs-monolith Mon, 13 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[CAP Theorem — You Can Only Pick Two (Like a Pizza Topping Rule)]]> https://sahilsudan.com/learn/cap-theorem https://sahilsudan.com/learn/cap-theorem Sun, 12 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Consistent Hashing — The Musical Chairs of Distributed Systems]]> https://sahilsudan.com/learn/consistent-hashing https://sahilsudan.com/learn/consistent-hashing Sat, 11 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Message Queues — The Post Office of Your Backend]]> https://sahilsudan.com/learn/message-queues https://sahilsudan.com/learn/message-queues Fri, 10 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[SQL vs NoSQL — Excel Spreadsheet vs Sticky Notes]]> https://sahilsudan.com/learn/sql-vs-nosql https://sahilsudan.com/learn/sql-vs-nosql Thu, 09 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[API Gateway — The Receptionist of Your Microservices]]> https://sahilsudan.com/learn/api-gateway-pattern https://sahilsudan.com/learn/api-gateway-pattern Wed, 08 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Circuit Breaker Pattern — The MCB of Your Microservices]]> https://sahilsudan.com/learn/circuit-breaker-pattern https://sahilsudan.com/learn/circuit-breaker-pattern Tue, 07 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[CDN — Why Netflix Doesn't Buffer (And Your App Shouldn't Either)]]> https://sahilsudan.com/learn/cdn-explained https://sahilsudan.com/learn/cdn-explained Mon, 06 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[WebSockets — From Sending Letters to Making Phone Calls]]> https://sahilsudan.com/learn/websockets-explained https://sahilsudan.com/learn/websockets-explained Sun, 05 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[OAuth & JWT — The Hotel Keycard System of the Internet]]> https://sahilsudan.com/learn/oauth-authentication https://sahilsudan.com/learn/oauth-authentication Sat, 04 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Event-Driven Architecture — The WhatsApp Group of Your Backend]]> https://sahilsudan.com/learn/event-driven-architecture https://sahilsudan.com/learn/event-driven-architecture Fri, 03 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan) <![CDATA[Database Indexing — The Table of Contents for Your Data]]> https://sahilsudan.com/learn/database-indexing https://sahilsudan.com/learn/database-indexing Thu, 02 Apr 2026 00:00:00 GMT Sahils74089@gmail.com (Sahil Sudan)