Protobuf Practice

Edit the schema, wait for the descriptor checks, and continue when everything passes.

Progress

Exercise 3: Integer Types

3. Integer Types

Context

Integer choice affects wire size. int32/int64 waste bytes on negatives; sint32/sint64 ZigZag-encode them. Values that never go negative should be unsigned.

Task

Change ledger_balance to sint64, and change hardware_counter to uint32 or uint64.

Basics > Guidelines for Integers

schema.proto

Valid Schema

syntax = "proto3";

package practice;

message Metrics {
  int32 ledger_balance = 1;
  int32 hardware_counter = 2;
}

EVALUATION_CHECKS

ledger_balance uses 'sint64' for zigzag encoding efficiency.

hardware_counter uses unsigned integer type ('uint32' or 'uint64').

Exercise Incomplete

Please satisfy all checks above

Basics

Write practical schemas with messages, fields, and types.

Advanced

Evolve messages without breaking deployed systems.

Binary

Decode wire-format bytes one field at a time.