Question 1

How do I run a WebAssembly module with Wasmer?

Accepted Answer

Use the 'wasmer run' command followed by the module name, like 'wasmer run cowsay' from the quickstart example. You can also embed it via SDKs for languages such as Rust or Python for more control.

Question 2

Wasmer vs Docker: which should I use?

Accepted Answer

Wasmer is ideal for lightweight, secure sandboxing with WebAssembly, offering better performance and isolation for single-process applications. Docker suits full OS containers with extensive orchestration tools and a mature ecosystem.

Question 3

Can Wasmer run Python applications?

Accepted Answer

Yes, via packages like 'wasmer/python' from the registry, but Python code must be compiled to WebAssembly first, which may have limitations with native extensions or specific libraries.

Question 4

How to embed Wasmer in a Rust project?

Accepted Answer

Use the 'wasmer' Rust crate available on crates.io, as listed in the SDK table. The documentation provides APIs for loading and executing WebAssembly modules directly within your Rust code.

Question 5

Is Wasmer suitable for edge computing?

Accepted Answer

Yes, Wasmer's lightweight containers and cross-platform support make it well-suited for edge environments, where resource constraints and security are critical, as mentioned in the target use cases.

Question 6

What are the limitations of Wasmer's security model?

Accepted Answer

While secure by default, you must manually enable access to resources like files or networks, which can lead to misconfiguration. The sandboxing also restricts low-level system interactions not covered by WASI.

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