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Web3 & DApp Development Fundamentals · Pelajaran

Siklus Hidup Transaksi

Dari penandatanganan hingga mining

Siklus Hidup Transaksi adalah pelajaran Web3 & DApp Development Fundamentals gratis di CoddyKit. Ini adalah pelajaran 2 dari 4. Kamu bisa membaca pelajaran lengkapnya di bawah secara gratis — lalu praktikkan langsung di browser dengan editor kode bawaan dan tutor AI 24/7. Ini adalah bagian dari jalur belajar Web3 & DApp Development Fundamentals, dan progresmu tersinkronisasi di web dan aplikasi CoddyKit. Kursus Web3 & DApp Development Fundamentals mencakup 4 pelajaran total.

Bagian dari pelajaran ini belum diterjemahkan dan ditampilkan dalam bahasa Inggris.

From Click to Confirmation

When you send a transaction, a lot happens behind the scenes before it becomes permanent.

This lesson walks through the full transaction lifecycle, from signing to inclusion in a block.

Step 1: Building the Transaction

Your wallet assembles a transaction object containing the recipient, value, data, gas settings, and a nonce.

tx = {
  to:    0xRecipient...,
  value: 1000000000000000000, // 1 ETH
  nonce: 7,
  gasLimit: 21000,
  maxFeePerGas: 30 gwei
}

Step 2: Signing

The wallet signs the transaction with your private key, producing a digital signature.

The signature proves you authorized it without ever revealing your private key. Anyone can verify it using your public address.

Step 3: Broadcasting

The signed transaction is broadcast to a node, which validates it and gossips it to peers across the network.

Within seconds, nodes everywhere know about your pending transaction.

Step 4: The Mempool

Pending transactions wait in the mempool (memory pool) — a holding area for transactions not yet included in a block.

Validators pick from the mempool when building the next block.

mempool (pending):
  tx A  (tip: 5 gwei)
  tx B  (tip: 2 gwei)
  tx C  (tip: 8 gwei)  <- picked first

Step 5: Selection by a Validator

A validator building a block selects transactions, usually favoring higher fee tips for more revenue.

Paying a higher tip can speed up inclusion, especially when the network is congested.

Step 6: Execution

The validator executes the transaction on the EVM, updating account balances and contract state, consuming gas as it goes.

If it runs out of gas or hits an error, it reverts — but the gas spent is still consumed.

Step 7: Inclusion in a Block

The executed transaction is packed into a new block along with others. The block is proposed and attested to by validators.

At this point your transaction has one confirmation.

Step 8: Confirmations and Finality

As more blocks build on top, your transaction gains confirmations. On Ethereum PoS, it eventually becomes finalized and irreversible.

Now the transfer or contract call is permanently settled.

Receipts

After execution, the network produces a transaction receipt recording status (success or revert), gas used, and any emitted events (logs).

Apps read receipts to confirm what actually happened on-chain.

receipt = {
  status: 1,        // 1 = success, 0 = revert
  gasUsed: 21000,
  blockNumber: 18250431,
  logs: [ ... ]
}

Putting It Together

A transaction is built, signed, broadcast, queued in the mempool, selected and executed by a validator, included in a block, and finally confirmed and finalized.

A receipt records the outcome.

Quick Check

Test your understanding of the lifecycle.

Recap: Transaction Lifecycle

You learned the stages:

  • Build and sign with the private key
  • Broadcast to the network
  • Wait in the mempool
  • Selected, executed, and included in a block
  • Confirmed and finalized, with a receipt

Next: gas limits and fees.

Pertanyaan yang Sering Diajukan

Apakah pelajaran “Siklus Hidup Transaksi” gratis?

Ya — teks lengkap “Siklus Hidup Transaksi” gratis dibaca di sini di web. Untuk praktiknya secara interaktif (editor kode bawaan dan tutor AI 24/7) dan buka sisa kursus Web3 & DApp Development Fundamentals, upgrade ke CoddyKit PRO. Kursus Web3 & DApp Development Fundamentals mencakup 4 pelajaran total.

Apa yang akan aku pelajari di “Siklus Hidup Transaksi”?

Dari penandatanganan hingga mining Kamu berlatih Web3 & DApp Development Fundamentals dengan kode praktik yang langsung kamu jalankan di browser, dan tutor AI 24/7 menjawab pertanyaanmu saat kamu mengerjakan pelajaran ini.

Apakah aku perlu pengalaman untuk memulai Web3 & DApp Development Fundamentals?

Tidak diperlukan pengalaman sebelumnya. Web3 & DApp Development Fundamentals di CoddyKit dirancang untuk pemula hingga pelajar tingkat lanjut, jadi kamu bisa memulai di sini atau dari awal dan belajar sesuai kecepatan kamu sendiri. Ini adalah pelajaran 2 dari 4.

Berapa lama pelajaran “Siklus Hidup Transaksi” memakan waktu?

Sebagian besar pelajaran CoddyKit memakan waktu sekitar 5–10 menit. Setiap pelajaran ringkas dan interaktif, jadi kamu membuat kemajuan stabil dan melanjutkan dari tempat kamu tinggalkan di web dan aplikasi.

Bisakah aku menulis dan menjalankan kode dalam pelajaran Web3 & DApp Development Fundamentals ini?

Ya. Setiap pelajaran Web3 & DApp Development Fundamentals menyertakan editor kode bawaan, jadi kamu menulis dan menjalankan kode nyata langsung di browser dan mendapatkan umpan balik AI instan — tidak diperlukan penyiapan lokal.

Semua pelajaran dalam kursus ini

  1. Apa Itu Gas
  2. Siklus Hidup Transaksi
  3. Batas Gas dan Biaya
  4. Nonce dan Pengurutan
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