Updates README to reflect the project direction

README.md

@@ -1,60 +1,16 @@
+> [!WARNING] 
+> We are no longer recommending this SDK or Wasm in general for anyone due to the fundamental memory issue of TinyGo (See [the detailed explanation](https://github.com/tetratelabs/proxy-wasm-go-sdk/issues/450#issuecomment-2253729297) by a long-time community member)
+> as well as [the project state of Proxy-Wasm in general](https://github.com/envoyproxy/envoy/issues/35420).
+> If you are not in a position where you have to run untrusted binaries (like for example, you run Envoy proxies while your client gives you the binaries to run), we recommend using other extension mechanism 
+> such as Lua or External Processing which should be comparable or better or worse depending on the use case. 
+> 
+> If you are already using this SDK, but still want to continue using Wasm for some reason instead of Lua or External Processing, 
+> we strongly recommend migrating to the Rust or C++ SDK due to the memory issue of TinyGo described in the like above.
+> 
+> We keep this repository open and not archived for the existing users, but we cannot provide any support or guarantee for the future development of this SDK.
+
 # WebAssembly for Proxies (Go SDK) [![Build](https://github.com/tetratelabs/proxy-wasm-go-sdk/workflows/Test/badge.svg)](https://github.com/tetratelabs/proxy-wasm-go-sdk/actions) [![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](LICENSE)
 
 The Go SDK for
  [Proxy-Wasm](https://github.com/proxy-wasm/spec), enabling developers to write Proxy-Wasm plugins in Go. 
 This SDK is powered by [TinyGo](https://tinygo.org/) and does not support the official Go compiler.
-
-## Getting Started
-
-- [examples](examples) directory contains the example codes on top of this SDK.
-- [OVERVIEW.md](doc/OVERVIEW.md) the overview of Proxy-Wasm, the API of this SDK, and the things you should know when writing plugins.
-
-## Requirements
-
-- [TinyGo](https://tinygo.org/): v0.32+ - This SDK depends on TinyGo and leverages its [WASI](https://github.com/WebAssembly/WASI) (WebAssembly System Interface) target. Please follow the official instruction [here](https://tinygo.org/getting-started/) for installing TinyGo.
-- [Envoy](https://www.envoyproxy.io) - To run compiled examples, you need to have Envoy binary. We recommend using [func-e](https://func-e.io) as the easiest way to get started with Envoy. Alternatively, you can follow [the official instruction](https://www.envoyproxy.io/docs/envoy/latest/start/install).
-
-
-## Installation
-
-```
-go get github.com/tetratelabs/proxy-wasm-go-sdk
-```
-
-## Build and run Examples
-
-```bash
-# Build all examples.
-make build.examples
-
-# Build a specific example.
-make build.example name=helloworld
-
-# Run a specific example.
-make run name=helloworld
-```
-
-## Compatible Envoy builds
-
-Envoy is the first host side implementation of Proxy-Wasm ABI, 
-and we run end-to-end tests with multiple versions of Envoy and Envoy-based [istio/proxy](https://github.com/istio/proxy) in order to verify Proxy-Wasm Go SDK works as expected.
-
-Please refer to [workflow.yaml](.github/workflows/workflow.yaml) for which version is used for End-to-End tests.
-
-## Build tags
-
-The following build tags can be used to customize the behavior of the built plugin:
-
-- `proxywasm_timing`: Enables logging of time spent in invocation of the plugin's exported functions. This can be useful for debugging performance issues.
-
-## Contributing
-
-We welcome contributions from the community! See [CONTRIBUTING.md](doc/CONTRIBUTING.md) for how to contribute to this repository.
-
-## External links
-
-- [WebAssembly for Proxies (ABI specification)](https://github.com/proxy-wasm/spec)
-- [WebAssembly for Proxies (AssemblyScript SDK)](https://github.com/solo-io/proxy-runtime)
-- [WebAssembly for Proxies (C++ SDK)](https://github.com/proxy-wasm/proxy-wasm-cpp-sdk)
-- [WebAssembly for Proxies (Rust SDK)](https://github.com/proxy-wasm/proxy-wasm-rust-sdk)
-- [TinyGo - Go compiler for small places](https://tinygo.org/)