What are the advantages of JIT vs AOT compilation?

What are the advantages of JIT vs AOT compilation?

JIT (Just-In-Time) compilation allows for optimizations at runtime, which can lead to better performance for dynamic applications. AOT (Ahead-Of-Time) compilation, on the other hand, compiles code before execution, resulting in faster startup times and reduced memory usage.

Can you explain how JIT improves performance?

JIT improves performance by compiling code on the fly, allowing it to optimize based on actual usage patterns. This means it can make decisions that static compilation can't, such as inlining frequently called methods.

What are the downsides of using JIT?

The downsides of JIT include longer initial startup times due to the compilation process and increased memory usage since it needs to keep the compiled code in memory.

How does AOT handle different platforms?

AOT compiles code for a specific platform ahead of time, which can lead to better optimization for that environment. However, it may require separate builds for different platforms, increasing maintenance.

Which one is better for mobile applications?

For mobile applications, AOT is often preferred due to its faster startup times and lower memory usage, which are critical for performance on mobile devices.