Although it is always said that "heroes don't ask where they come from", Dachang card education is the default "hidden rule". But recently a brother, let me very excited! People go ashore completely by strength. He belongs to the dead type, and he is a rare Android performance optimization master I have seen in the past 2 years. To say that he is also very smart, the thief will choose the field. If you go out and ask casually, 9 out of 10 experts will say that being proficient in performance optimization is the most cost-effective for an Android developer!
This is not only the eternal stepping stone of a big factory, but also the most valuable signboard in the work. In recent years, interviews have gone deeper and wider.
What performance optimizations have you done (startup speed, power, pages, memory...);
how to reduce APP startup time;
memory optimization, you must understand memory leaks;
for example, memory jitter
Performance optimization is like an evergreen skill tree , whether it is general development or chief architecture, CTO can draw enough technical nourishment from it. Ordinary development often only stays at the stage of "used" or even "heard of" for performance optimization. There are even some Android engineers who have worked for more than 5 years, while technical backbones and architects often need to have a thorough understanding of the underlying principles . To put it bluntly, knowing how to use is one aspect, but knowing why is a more scarce ability .
Many technical experts will mention a crucial point when summarizing the core capabilities of Android programmers: proficiency in performance optimization. Proficiency means:
First , no matter which major factory you go to interview, performance should be a must-ask, and it can be used in a wide range, so it cannot be avoided anyway; second
, the deeper you master performance optimization, the more you can do more things.
I often see some friends write "proficient in performance optimization" during interviews, but most people have certain misunderstandings about proficiency . Due to business requirements, we often need to perform performance optimization, and optimization is not always performed on a simple environment, but on a complex production system.
For most programmers, even if they have worked for a long time and have rich experience, they still feel helpless in the face of difficult problems . underlying principles .
Some time ago, I collected the knowledge brain map summary and study manual documents about Android performance optimization! It can not only consolidate the core technical points such as underlying principles and performance tuning, but also master the architecture design methodology that is difficult for ordinary developers to touch . Then you will have core competitiveness that is difficult for your peers to copy when you are at work, in a team, or during interviews.
In order to help you better understand performance optimization in a comprehensive and clear way, we have prepared relevant learning routes and core notes (returning the underlying logic): https://qr18.cn/FVlo89You can learn for reference:
Android performance analysis and optimization practical advanced manual
