Solana Transactions Explained for Backend Developers (With Real Failures)

I've been building on Solana for the past few weeks as part of the 100DaysOfSolana challenge by MLH. Days 15–19 were all about transactions — sending them, reading them, tracking them through confirmation stages, and deliberately breaking them. Here's what I learned, explained for backend developers who think in HTTP requests and database calls. A Solana Transaction Is Not an API Call When you hit a REST endpoint, you send a request and get a response. If it fails, yo...