Article: Beyond the Benchmark: a Metrics-Driven Approach to Sustained iOS Performance on Real Devices

Vasuki Uday Kiran Vudathala — Wed, 06 May 2026 09:00:00 GMT

iOS performance engineering often defaults to a mental model where performance is a property of a component. Performance is instead an emergent behavior of the interaction between application code, device hardware, OS resource management, network conditions, and user behavior patterns over time. This article gives a direct, first-party path to capturing performance issues using Xcode Instruments.

By Vasuki Uday Kiran Vudathala

DoorDash Used Copilot to Convert Its XCTest-Based iOS Test Suite to Swift Testing

Sergio De Simone — Mon, 04 May 2026 10:00:00 GMT

Using Copilot along with strong reliability safeguards, DoorDash migrated their iOS XCTest-based test suite to Swift Testing, thus modernizing a large test suite quickly, safely, and with measurable performance gains, says DoorDash engineer Matheus Gois.

By Sergio De Simone

InfoQ - Xcode

Article: Beyond the Benchmark: a Metrics-Driven Approach to Sustained iOS Performance on Real Devices

DoorDash Used Copilot to Convert Its XCTest-Based iOS Test Suite to Swift Testing