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Documentation Index

Fetch the complete documentation index at: https://launchdarkly-preview.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

This category contains documentation topics explaining LaunchDarkly’s server-side SDKs.

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Server-side SDKs

[.NET logo.NET logo.NET](/sdk/server-side/dotnet)[Apex logoApex logoApex](/sdk/server-side/apex)[C++ logoC++ logoC++](/sdk/server-side/c-c—)[Erlang logoErlang logoErlang](/sdk/server-side/erlang)[Go logoGo logoGo](/sdk/server-side/go)[Haskell logoHaskell logoHaskell](/sdk/server-side/haskell)[Java logoJava logoJava](/sdk/server-side/java)[Lua logoLua logoLua](/sdk/server-side/lua)[Node.js logoNode.js logoNode.js](/sdk/server-side/node-js)[PHP logoPHP logoPHP](/sdk/server-side/php)[Python logoPython logoPython](/sdk/server-side/python)[Ruby logoRuby logoRuby](/sdk/server-side/ruby)[Rust logoRust logoRust](/sdk/server-side/rust)

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Additional resources

| SDK | Sample applications | SDK API documentation | GitHub repository
Package manager
| --- | --- | --- | --- | | .NET (server-side) | hello-dotnet-server | .NET (server-side) SDK API docs | .NET (server-side) SDK | NuGet | | Apex | hello-apex-server | Apex SDK API docs | apex-server-sdk | None | | C++ (server-side) | hello-cpp-server | C/C++ (server-side) SDK API docs | cpp-sdks | None | | Erlang | hello-erlang (Erlang)
hello-elixir (Elixir)
hello-phoenix (Phoenix framework) | Erlang SDK API docs | erlang-server-sdk | Hex | | Go | hello-go | [Go SDK API docs](https://pkg.go.dev/gopkg.in/launchdarkly/go-server-sdk.v
| go-server-sdk | [gopkg.in](https://pkg.go.dev/gopkg.in/launchdarkly/go-server-sdk.v
  1. | | Haskell
| hello-haskell-server | Haskell SDK API docs | haskell-server-sdk | Hackage | | Java | hello-java (Java)
You can also use this SDK with Kotlin | Java SDK API docs | java-server-sdk | Maven | | Lua | hello-lua-server (Lua)
hello-haproxy (Lua with HAProxy)
hello-nginx (Lua with NGINX) | Lua SDK API docs | lua-server-sdk | LuaRocks | | Node.js (server-side) | hello-node-server (JavaScript)
hello-node-typescript (TypeScript)
hello-bootstrap (JavaScript, server-side bootstrapping example) | Node.js (server-side) SDK API docs | node-server-sdk | npm | | PHP | hello-php | PHP SDK API docs | php-server-sdk | Packagist | | Python | hello-python-server (Python)
hello-r (R) | Python SDK API docs | python-server-sdk | PyPI | | Ruby | hello-ruby (Ruby)
hello-bootstrap-rails (Rails server-side bootstrapping example) | Ruby SDK API docs | ruby-server-sdk | RubyGems | | Rust | hello-rust | Rust SDK API docs | rust-server-sdk | crates.io |