Hit the Ground Running: Wasm Snapshots for Fast Startup

Hit the Ground Running: Wasm Snapshots for Fast Startup

Don't make your users wait while your Wasm module initializes itself! Wizer instantiates your WebAssembly module, executes its initialization functions, and then snapshots the initialized state out into a new, pre-initialized WebAssembly module. Now you can use this new module to hit the ground running, without waiting for any of that first-time initialization code to complete. This talk will cover the design and implementation of Wizer; discuss its performance characteristics and the scenarios in which it excels and when it isn't the right tool; and finally, in the process of doing all that, we'll take a closer look at what makes up the guts of a WebAssembly module: memories, globals, tables, etc.

Don't make your users wait while your Wasm module initializes itself! Wizer instantiates your WebAssembly module, executes its initialization functions, and then snapshots the initialized state out into a new, pre-initialized WebAssembly module. Now you can use this new module to hit the ground running, without waiting for any of that first-time initialization code to complete. This talk will cover the design and implementation of Wizer; discuss its performance characteristics and the scenarios in which it excels and when it isn't the right tool; and finally, in the process of doing all that, we'll take a closer look at what makes up the guts of a WebAssembly module: memories, globals, tables, etc.

wasm webassembly

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