# Optimization

Before progressing, ensure you've completed the first steps. It's important to have either the Node.js REPL or the `wasmd` Go CLI pre-configured.

**Step 1: Obtaining and Compiling the Contract Code**

Get the [`cw-contracts`](https://github.com/InterWasm/cw-contracts) repository first. Then:

{% code overflow="wrap" %}

```plaintext
git clone https://github.com/InterWasm/cw-contracts
cd cw-contracts
git checkout main
cd contracts/nameservice
rustup default stable
cargo wasm
```

{% endcode %}

To trim it down, you can run:

```plaintext
RUSTFLAGS='-C link-arg=-s' cargo wasm
```

This command yields a much compact version, roughly 165kB in size. This file or another optimized version will eventually get uploaded to the blockchain.

**Step 2: Running Unit Tests**

Unit tests ensure the contract operates as expected:

```plaintext
RUST_BACKTRACE=1 cargo unit-test
```

**Step 3: Optimizing for Deployment**

The `rust-optimizer` is the tool for this task and it allows third parties to validate the legitimacy of the contract.

{% hint style="info" %}
The `rust-optimizer` requires Docker.
{% endhint %}

On Linux and Mac, execute:

{% code overflow="wrap" %}

```plaintext
docker run --rm -v "$(pwd)":/code \
  --mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target \
  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
  cosmwasm/rust-optimizer:0.12.11
```

{% endcode %}

For Windows:

{% code overflow="wrap" %}

```plaintext
docker run --rm -v ${pwd}:/code `
 --mount type=volume,source="$("$(Split-Path -Path $pwd -Leaf)")_cache",target=/code/target `
 --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry `
 cosmwasm/rust-optimizer:0.12.11
```

{% endcode %}

After optimization, the resultant binary is located under the `artifacts` directory and will be approximately 138 kB in size.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://cascadia.gitbook.io/gitbook/developers/cosmwasm/download-and-optimize.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.