Proxy Cache Configuration

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Configuration

This plugin is compatible with DB-less mode.

Compatible protocols

The Proxy Cache plugin is compatible with the following protocols:

grpc, grpcs, http, https, tcp, tls, tls_passthrough, udp, ws, wss

Parameters

Here's a list of all the parameters which can be used in this plugin's configuration:

• name or plugin

  string required

  The name of the plugin, in this case proxy-cache.

  • If using the Kong Admin API, Konnect API, declarative configuration, or decK files, the field is name.
  • If using the KongPlugin object in Kubernetes, the field is plugin.

• instance_name

  string

  An optional custom name to identify an instance of the plugin, for example proxy-cache_my-service.

  The instance name shows up in Kong Manager and in Konnect, so it's useful when running the same plugin in multiple contexts, for example, on multiple services. You can also use it to access a specific plugin instance via the Kong Admin API.

  An instance name must be unique within the following context:

  • Within a workspace for Kong Gateway Enterprise
  • Within a control plane or control plane group for Konnect
  • Globally for Kong Gateway (OSS)

• service.name or service.id

  string

  The name or ID of the service the plugin targets. Set one of these parameters if adding the plugin to a service through the top-level /plugins endpoint. Not required if using /services/{serviceName|Id}/plugins.

• route.name or route.id

  string

  The name or ID of the route the plugin targets. Set one of these parameters if adding the plugin to a route through the top-level /plugins endpoint. Not required if using /routes/{routeName|Id}/plugins.

• consumer.name or consumer.id

  string

  The name or ID of the consumer the plugin targets. Set one of these parameters if adding the plugin to a consumer through the top-level /plugins endpoint. Not required if using /consumers/{consumerName|Id}/plugins.

• enabled

  boolean default: true

  Whether this plugin will be applied.

• config

  record required
  • response_code

    array of type integer required default: 200, 301, 404 len_min: 1

    Upstream response status code considered cacheable.

  • request_method

    array of type string required default: GET, HEAD Must be one of: HEAD, GET, POST, PATCH, PUT

    Downstream request methods considered cacheable.

  • content_type

    array of type string required default: text/plain, application/json

    Upstream response content types considered cacheable. The plugin performs an exact match against each specified value.

  • cache_ttl

    integer default: 300

    TTL, in seconds, of cache entities.

  • strategy

    string required Must be one of: memory

    The backing data store in which to hold cache entities.

  • cache_control

    boolean required default: false

    When enabled, respect the Cache-Control behaviors defined in RFC7234.

  • ignore_uri_case

    boolean default: false

  • storage_ttl

    integer

    Number of seconds to keep resources in the storage backend. This value is independent of cache_ttl or resource TTLs defined by Cache-Control behaviors.

  • memory

    record required
    • dictionary_name

      string required default: kong_db_cache

      The name of the shared dictionary in which to hold cache entities when the memory strategy is selected. Note that this dictionary currently must be defined manually in the Kong Nginx template.

  • vary_query_params

    array of type string

    Relevant query parameters considered for the cache key. If undefined, all params are taken into consideration.

  • vary_headers

    array of type string

    Relevant headers considered for the cache key. If undefined, none of the headers are taken into consideration.

  • response_headers

    record required

    Caching related diagnostic headers that should be included in cached responses

    • age

      boolean default: true

    • X-Cache-Status

      boolean default: true

    • X-Cache-Key

      boolean default: true