https://diffreel.dev/ 2026-08-15T19:39:36.573Z weekly 1 https://diffreel.dev/about 2026-08-15T19:39:36.573Z weekly 0.3 https://diffreel.dev/category/architecture 2026-08-15T19:39:36.573Z weekly 0.5 https://diffreel.dev/category/databases 2026-08-15T19:39:36.573Z weekly 0.5 https://diffreel.dev/category/distributed-systems 2026-08-15T19:39:36.573Z weekly 0.5 https://diffreel.dev/category/networking 2026-08-15T19:39:36.573Z weekly 0.5 https://diffreel.dev/category/web 2026-08-15T19:39:36.573Z weekly 0.5 https://diffreel.dev/tag/latency 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/scaling 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/databases 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/reliability 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/performance 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/caching 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/consistency 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/protocols 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/queues 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/tag/security 2026-08-15T19:39:36.573Z weekly 0.4 https://diffreel.dev/reels/redis-caching How Redis Caching Works https://diffreel.dev/media/redis-caching/thumb-16x9.jpg A copy of the row, kept somewhere fast — 40× quicker to read, and wrong the moment the row changes. https://diffreel.dev/media/redis-caching/reel.mp4 83 20 2026-08-15T17:49:27.290Z 2026-08-15T18:17:38.378Z monthly 0.8 https://diffreel.dev/reels/l4-vs-l7-load-balancing L4 vs L7 Load Balancing https://diffreel.dev/media/l4-vs-l7-load-balancing/thumb-16x9.jpg One picks a server before it knows what you asked for. The other reads the request first. https://diffreel.dev/media/l4-vs-l7-load-balancing/reel.mp4 46 10 2026-08-15T17:49:23.297Z 2026-08-15T18:17:33.213Z monthly 0.8 https://diffreel.dev/reels/forward-proxy-vs-reverse-proxy Forward Proxy vs Reverse Proxy https://diffreel.dev/media/forward-proxy-vs-reverse-proxy/thumb-16x9.jpg The same box in the middle — the difference is which side it is standing in for. https://diffreel.dev/media/forward-proxy-vs-reverse-proxy/reel.mp4 36 3 2026-08-15T17:49:19.936Z 2026-08-15T18:17:29.078Z monthly 0.8 https://diffreel.dev/reels/vertical-vs-horizontal-scaling Vertical vs Horizontal Scaling https://diffreel.dev/media/vertical-vs-horizontal-scaling/thumb-16x9.jpg Traffic grows. Either the machine gets bigger, or there are more machines. https://diffreel.dev/media/vertical-vs-horizontal-scaling/reel.mp4 45 4 2026-08-15T17:49:15.853Z 2026-08-15T18:17:24.707Z monthly 0.8 https://diffreel.dev/reels/origin-vs-cdn-edge Origin vs CDN Edge https://diffreel.dev/media/origin-vs-cdn-edge/thumb-16x9.jpg Every request crossing the world, or most of them stopping a few miles away. https://diffreel.dev/media/origin-vs-cdn-edge/reel.mp4 45 5 2026-08-15T17:49:13.930Z 2026-08-15T18:17:22.695Z monthly 0.8 https://diffreel.dev/reels/direct-call-vs-queue Direct Call vs Queue https://diffreel.dev/media/direct-call-vs-queue/thumb-16x9.jpg Wait for the slow thing, or hand it to something that will do it later. https://diffreel.dev/media/direct-call-vs-queue/reel.mp4 45 1 2026-08-15T17:49:12.227Z 2026-08-15T18:17:20.672Z monthly 0.8 https://diffreel.dev/reels/at-least-once-vs-exactly-once At-Least-Once vs Exactly-Once https://diffreel.dev/media/at-least-once-vs-exactly-once/thumb-16x9.jpg The message arrives twice. Whether that matters is a design decision you already made. https://diffreel.dev/media/at-least-once-vs-exactly-once/reel.mp4 45 1 2026-08-15T17:49:10.504Z 2026-08-15T18:17:18.651Z monthly 0.8 https://diffreel.dev/reels/retry-storm-vs-jitter Retry Storm vs Jitter https://diffreel.dev/media/retry-storm-vs-jitter/thumb-16x9.jpg Same clients, same backoff, same traffic — one number changes, and the pile-on disappears. https://diffreel.dev/media/retry-storm-vs-jitter/reel.mp4 45 1 2026-08-15T17:49:08.732Z 2026-08-15T18:17:16.227Z monthly 0.8 https://diffreel.dev/reels/replication-vs-sharding Replication vs Sharding https://diffreel.dev/media/replication-vs-sharding/thumb-16x9.jpg Copy every write to every node, or send each write to exactly one. https://diffreel.dev/media/replication-vs-sharding/reel.mp4 45 3 2026-08-15T17:49:06.949Z 2026-08-15T18:17:14.159Z monthly 0.8 https://diffreel.dev/reels/n-plus-1-vs-join N+1 vs JOIN https://diffreel.dev/media/n-plus-1-vs-join/thumb-16x9.jpg The same page, the same data — one round trip or a hundred and one. https://diffreel.dev/media/n-plus-1-vs-join/reel.mp4 45 4 2026-08-15T17:49:05.150Z 2026-08-15T18:17:12.028Z monthly 0.8 https://diffreel.dev/reels/tcp-vs-udp TCP vs UDP https://diffreel.dev/media/tcp-vs-udp/thumb-16x9.jpg One protocol asks whether every piece arrived. The other never asks. https://diffreel.dev/media/tcp-vs-udp/reel.mp4 45 2026-08-15T17:49:02.983Z 2026-08-15T18:17:09.936Z monthly 0.8 https://diffreel.dev/reels/session-vs-jwt Session vs JWT https://diffreel.dev/media/session-vs-jwt/thumb-16x9.jpg One keeps the truth on the server, the other hands it to the client and hopes it comes back honest. https://diffreel.dev/media/session-vs-jwt/reel.mp4 45 11 2026-08-15T17:49:01.155Z 2026-08-15T18:17:07.291Z monthly 0.8 https://diffreel.dev/reels/cache-aside-vs-write-through Cache-Aside vs Write-Through https://diffreel.dev/media/cache-aside-vs-write-through/thumb-16x9.jpg Two ways to keep a fast copy of your data — one fills the cache on demand, the other on every write. https://diffreel.dev/media/cache-aside-vs-write-through/reel.mp4 50 2026-08-15T17:48:57.131Z 2026-08-15T18:17:02.472Z monthly 0.8