Batch operations in Blockchain / Solidity - Mini Project: Build & Apply

Batch Operations on Blockchain Transactions

📖 Scenario: You are working with a blockchain system where multiple transactions need to be processed together as a batch. This helps save time and resources by grouping transactions before sending them to the blockchain.

🎯 Goal: Build a simple program that creates a batch of transactions, sets a batch size limit, processes only transactions within that limit, and then outputs the processed batch.

📋 What You'll Learn

Create a list called transactions with exactly these strings: 'tx1', 'tx2', 'tx3', 'tx4', 'tx5'

Create an integer variable called batch_limit and set it to 3

Create a new list called batch that contains only the first batch_limit transactions from transactions

Print the batch list

💡 Why This Matters

🌍 Real World

Batch processing is common in blockchain to reduce fees and improve efficiency by grouping multiple transactions into one operation.

💼 Career

Understanding batch operations helps in blockchain development roles where optimizing transaction throughput and cost is important.

1

Create the transactions list

Create a list called transactions with these exact strings: 'tx1', 'tx2', 'tx3', 'tx4', 'tx5'

Blockchain / Solidity

# Create the transactions list
# Your code here

Need a hint?

Use square brackets [] to create a list and separate items with commas.

2

Set the batch size limit

Create an integer variable called batch_limit and set it to 3

Blockchain / Solidity

transactions = ['tx1', 'tx2', 'tx3', 'tx4', 'tx5']
# Create the batch_limit variable
# Your code here

Need a hint?

Use a simple assignment to create the variable batch_limit and set it to 3.

3

Create the batch list

Create a new list called batch that contains only the first batch_limit transactions from the transactions list

Blockchain / Solidity

transactions = ['tx1', 'tx2', 'tx3', 'tx4', 'tx5']
batch_limit = 3
# Create the batch list with the first batch_limit transactions
# Your code here

Need a hint?

Use list slicing [:batch_limit] to get the first batch_limit items.

4

Print the batch

Print the batch list to display the processed transactions

Blockchain / Solidity

transactions = ['tx1', 'tx2', 'tx3', 'tx4', 'tx5']
batch_limit = 3
batch = transactions[:batch_limit]
# Print the batch list
# Your code here

Need a hint?

Use print(batch) to show the batch list.