Ready to build mobile apps that out-perform the rest? If you’re an iOS developer with app-building experience, this practical guide provides tips and best practices to help you solve many common performance issues. You’ll learn how to design and optimize iOS apps that deliver a smooth experience even when the network is poor and memory is low.
Today’s picky users want fast and responsive apps that don’t hog resources. In this book, author Gaurav Vaish demonstrates methods for writing optimal code from an engineering perspective, using reusable Objective-C code that you can use right away. Up your game and create high-performance native iOS apps that truly stand out from the crowd.
Measure key performance indicators—attributes that constitute and affect app performance
Write efficient apps by minimizing memory and power consumption, and explore options for using available CPU cores
Optimize your app’s lifecycle and UI, as well as its networking, data sharing, and security features
Learn about application testing, debugging and analysis tools, and monitoring your app in the wild
Collect data from real users to analyze app usage, identify bottlenecks, and provide fixes
Use iOS 9 upgrades to improve your app’s performance
Gaurav was introduced to GW-BASIC when he was 12yrs old and he fell in love with its simplicity. Over 20yrs later, he has programmed in most of the major languages, on every popular operating system and probably for every popular device today.
He works in the Mobile and Emerging Products (MEP) group at Yahoo headquarters and more specifically in the Mobile SDK team whose charter is to create optimized reusable solutions that are incorporated across Yahoo mobile apps, run on dozens of variety of devices and used by hundreds of millions of users every month.
He started his career in 2002 with Adobe Systems India working in their engineering solutions group. In 2005, he started his own company, Edujini Labs, focusing on corporate training and collaborative learning.He holds a B. Tech. in Electrical Engineering with a specialization in Speech Signal Processing from IIT Kanpur, India.
He is the author of the books "Reflections by IITians" and "Getting Started with NoSQL". He runs his personal blog at http://www.m10v.com. He currently lives in Silicon Valley.
The animal on the cover of High Performance iOS Apps is a pomarine skua (Stercorar?ius pomarinus), a migrating seabird that can be found all over the world. It winters atsea in tropical oceans, and then returns north to lay its eggs on the arctic tundra during the summer. Although the name is unrelated to the Baltic Sea region of Pomerania, Pomeranian skua is a commonly used misnomer for these birds.
Full-grown pomarine skuas can range from 18 to 26 inches in length and weigh closeto two pounds. Identification of this species of skua can be difficult due to its similarities to the parasitic jaeger (another kind of seabird) and the fact that adults are polymorphic, or come in three different color patterns. All three patterns contain various shades of brown, black, and white, often with white underbellies and a white wing flash.
Pomarine skuas feed on fish, carrion, smaller birds, and even rodents. They have beenknown to steal fish from gulls, terns, or gannets in mid-flight and are only preyedupon by adult white-tailed and golden eagles. Once females have nested in the arctic,they lay two to three olive brown eggs in grass nests on the ground. Skuas are knownfor their fierce defense of these nests; though they cannot do much damage, it is certainly a frightening experience to have an angry mother bird dive straight at your head!