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docs: document LITELLM_ENABLE_HTTP2 and HTTP/2 pool env vars #346

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docs: document LITELLM_ENABLE_HTTP2 and HTTP/2 pool env vars #346

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3 changes: 3 additions & 0 deletions docs/proxy/config_settings.md
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Expand Up @@ -910,6 +910,9 @@ router_settings:
| LITELLM_FAVICON_URL | Custom URL for the LiteLLM UI favicon. When set, overrides the default favicon
| LITELLM_GLOBAL_MAX_PARALLEL_REQUEST_RETRIES | Maximum retries for parallel requests in LiteLLM
| LITELLM_GLOBAL_MAX_PARALLEL_REQUEST_RETRY_TIMEOUT | Timeout for retries of parallel requests in LiteLLM
| LITELLM_ENABLE_HTTP2 | If true, enables opt-in HTTP/2 for outbound requests to upstream LLM providers. Default is false (HTTP/1.1). Can also be set via `litellm.enable_http2` or `litellm_settings.enable_http2` in config.yaml. See [HTTP/2 support](./config_settings).
| LITELLM_HTTP2_MAX_CONNECTIONS | Optional integer. Maximum number of connections in the HTTP/2 client pool. Only applies when HTTP/2 is enabled. Defaults to httpx defaults when unset. Can also be set via `litellm.http2_max_connections`.
| LITELLM_HTTP2_MAX_KEEPALIVE_CONNECTIONS | Optional integer. Maximum number of keep-alive connections in the HTTP/2 client pool. Only applies when HTTP/2 is enabled. Defaults to httpx defaults when unset. Can also be set via `litellm.http2_max_keepalive_connections`.
| LITELLM_DISABLE_LAZY_LOADING | When set to "1", "true", "yes", or "on", disables lazy loading of attributes (currently only affects encoding/tiktoken). This ensures encoding is initialized before VCR starts recording HTTP requests, fixing VCR cassette creation issues. See [issue #18659](https://github.com/BerriAI/litellm/issues/18659)
| LITELLM_DISABLE_REDACT_SECRETS | When set to "true", disables automatic redaction of secrets (API keys, tokens, credentials) from proxy log output. Secret redaction is enabled by default.
| LITELLM_MIGRATION_DIR | Custom migrations directory for prisma migrations, used for baselining db in read-only file systems.
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