Welcome

Questions and answers from learning Go syntax. These cover tricky concepts that aren’t immediately obvious from reading the guide.

This guide teaches you Go syntax through simple, self-contained examples. Every concept is illustrated with small programs you could type and run yourself. By the end, you will be able to read any .go file and understand what it does.

The user calls eth_sendRawTransaction via HTTP/WebSocket/IPC, submitting a signed raw transaction.

This guide has been driven by a single question: “What happens when a transaction enters geth and becomes part of the permanent chain?” Over fourteen chapters, we examined every subsystem that participates in that journey. This final chapter traces the complete path in one continuous narrative — from the moment a user submits a transaction to the moment it is sealed in a finalized block — then provides a reference map of the entire architecture.

The geth() function itself is very concise:

Now that every subsystem has been covered — from primitives and state through execution, networking, and the RPC layer — this chapter shows how all the pieces wire together. We follow a single geth invocation from the command line through service initialization and shutdown, answering: how does a geth process come to life, and how does it cleanly shut down?

Every subsystem in previous chapters — block insertion, state management, the EVM, transaction pools, sync — runs inside geth. External clients (wallets, dApps, scripts, the beacon client) interact with geth through its JSON-RPC interface. This chapter covers how incoming RPC requests travel from the network transport through method dispatch and into the core, and how geth manages cryptographic keys for signing transactions.

Using eth_getBalance("0xAlice", "latest") as an example: