Learn WASMTIME with Real Code Examples

AOT compilation improves startup times

Cranelift optimizes hot paths

Minimize host↔Wasm calls

Use canonical ABI for better FFI performance

Avoid unnecessary memory copies

Capability-based WASI prevents privilege escalation

No raw syscalls-safe execution by design

Isolated memory for each module

Deterministic execution reduces attack surface

Resource limits prevent denial-of-service

Use wasmtime profiling tools

Trace Wasm traps

Measure startup time differences (JIT vs AOT)

Host app structured logs

Memory and CPU profiling

Use safe imports/exports

Avoid unnecessary host calls

Use WASI libraries where possible

Keep modules small and composable

Enable Wasmtime debugging flags