The first time I sent a Solana transaction, I expected it to behave like a normal API request:

Send request → wait → success/failure.

But after debugging failed transactions on devnet, inspecting logs in Solana Explorer, and manually tracking confirmations, I realised Solana transactions behave much more like database commits than HTTP calls .

That mental model shift finally made blockchain development click for me.

A Solana Transaction Is More Than a Request

A transaction contains:

signatures (authorization)

instructions (operations)

account keys (state involved)

a recent blockhash (replay protection)

Unlike a typical API request handled by one server, every validator in the network verifies and executes the transaction independently before agreeing on the final state change.

That’s a completely different architecture from most Web2 systems.

Failed Transactions Taught Me the Most

What surprised me most was that failed transactions still exist on-chain.

Even when a transfer fails, the…