> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lsproxy.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Language Specifics (In Progress)

<Note>This is a living document. If you notice something that isn't captured here, please reach out on [Discord](https://discord.gg/EUFGjSawyk)</Note>

## General Characteristics

### Server Properties

* Some languages persist a cache to disk. Subsequent startups will be faster
* Each language is handled by its own independent process
* Requests are handled asynchronously

### File Symbols

All languages use `ast-grep` for file symbol extraction:

* Consistent \< 50ms response time across languages and file sizes
* We control these rules, if you see something off, let us know

## Language-Specific Characteristics

### C/C++ ([clangd](https://clangd.llvm.org/))

#### Performance

* Long indexing time to startup
* Persists cache to disk
* Consistent memory usage (\~100 MB)
* Fast request response

#### Known Issues

* May require restarting `lsproxy` to initialize cache files. We are working on this: [Issue](https://github.com/agentic-labs/lsproxy/issues/98)

### Go ([gopls](https://github.com/golang/tools/tree/master/gopls))

#### Performance

* Long indexing time to startup

#### Known Issues

* ...

### Java ([jdtls](https://github.com/eclipse-jdtls/eclipse.jdt.ls))

#### Performance

* Long indexing time to startup
* High memory baseline (500MB+)
* Persists cache to disk

#### Known Issues

* Cache is not saved to mounted directory, so is lost when container is removed

### JavaScript/TypeScript ([typescript-language-server](https://github.com/typescript-language-server/typescript-language-server))

#### Performance

* ...

#### Known Issues

* ...

### PHP ([phpactor](https://github.com/phpactor/phpactor))

#### Performance

* Long indexing time to startup

#### Known Issues

* ...

### Python ([jedi-language-server](https://github.com/pappasam/jedi-language-server))

#### Performance

* Quick startup
* Reference requests very slow on large repos

#### Known Issues

* ...

### Rust ([rust-analyzer](https://github.com/rust-lang/rust-analyzer))

#### Performance

* ...

#### Known Issues

* ...