A few days ago, Solana transactions looked completely overwhelming to me.
I kept seeing terms like signatures, instructions, blockhashes, compute budgets, and account ownership everywhere, but none of it felt intuitive at first. Coming from a more traditional backend mindset, I was expecting transactions to work like a normal API request — send something, get a response, done.
Solana quickly showed me that it doesn’t work that way.
Over the past few days in my #100DaysOfSolana challenge, I spent most of my time experimenting with transactions on devnet. Some worked instantly, some failed for confusing reasons, and honestly, the failures taught me the most.
One thing that really changed my understanding was realising that a Solana transaction is more like an atomic state change than a simple request. Everything either succeeds together or fails together. There’s no “half success.” That mental shift took me time to understand.
I also started paying attention to details I normally would have ignored:
- why transactions need signatures
- why blockhashes expire
- how instructions are bundled together
- why compute limits matter
- and how even transaction size affects development decisions
The most interesting part was exploring failed transactions on Solana Explorer and trying to understand why they failed instead of just retrying them. Sometimes it was balance issues, sometimes account problems, and sometimes timing-related issues because of expired blockhashes. Reading logs and debugging those mistakes made the concepts feel real instead of theoretical.
Another thing I noticed while learning Solana is how different the developer experience feels compared to Web2. In Web2, most complexity is hidden behind servers and APIs. On Solana, you’re much closer to the system itself. You actually see how accounts, programs, and transaction execution interact.
That was frustrating at times, but also what made it interesting.
Looking back, transactions were probably the first Solana topic that genuinely challenged the way I think about software systems. But after spending several days building, testing, breaking, and debugging them, I finally feel like I’m starting to understand what’s happening under the hood instead of just copying code blindly.
Still learning every day, but this part of the journey definitely made Solana feel “real” to me.
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