performance

Oh sh*t, I have an "iOS coding" interview and don't know what to practice

A handy survival guide: drill, baby, drill!

Mar 31 • Jacob Bartlett

Is SwiftUI finally as fast as UIKit in iOS 26?

A scientific performance comparison. The final word.

Mar 9 • Jacob Bartlett

iOS System Design interviews in 2026

Practical prep advice based on three real-world interviews

Mar 3 • Jacob Bartlett

The Most Complicated System I Ever Worked On

A ludicrously elaborate pipeline of webscraping, parsing, persistence, processing, and polling

Feb 17 • Jacob Bartlett

Xcode Organizer: Your Performance Cheat Sheet

Instruments, but crowdsourced

Jan 20 • Jacob Bartlett

How to design an SDK to handle $10bn in transactions

A deep-dive into SDK design (feat. RevenueCat)

Jan 12

Building a Launch Time Optimisation System

Disappoint your users faster

Sep 16, 2025 • Jacob Bartlett

Performance Analytics

Actionable steps for crowd-sourcing your performance profiles

Aug 5, 2025 • Jacob Bartlett

High Performance SwiftData Apps

My 3000-word apology for killing my iPhone processor

Jul 14, 2025 • Jacob Bartlett

Data: a swift-foundation deep-dive

Understand the optimisations powering this fundamental struct

Jun 30, 2025 • Jacob Bartlett

Customised client-side AI with Apple's CLIP models

Perform Core ML magic, entirely offline

Jun 10, 2025 • Jacob Bartlett

The Swift Apple doesn't want you to know

Forbidden functions, deranged keywords, and plain weird syntax

May 27, 2025 • Jacob Bartlett

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