/Knowledge/sources/honojs__hono/llms-full/cache-middleware-options-vary-string-string--27e2eb2c9f9b.md
Cache Middleware: Options > vary: string | string[] - hono-docs
Cache Middleware: Options vary: string | string[] Source evidence: /Sources/honojs hono/provenance.md Canonical citation: https://hono.dev/llms full.txt vary...
Cache Middleware: Options > vary: string | string[]
Source evidence: /Sources/honojs__hono/provenance.md Canonical citation: https://hono.dev/llms-full.txt#vary-string-string
Summary
Sets the Vary header in the response. If the original response header already contains a Vary header, the values are merged, removing any duplicates. Setting this to * will result in an error. For more details on the Vary header an...
Content
Sets the Vary header in the response. If the original response header already contains a Vary header, the values are merged, removing any duplicates. Setting this to * will result in an error. For more details on the Vary header and its implications for caching strategies, refer to the MDN docs.
Metadata
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