Persistent Connections

resource_servers[]/persistent_connections

Configures the pool of persistent connections which is maintained for the resource server. A persistent connection will allow an established connection to the resource server to be used for multiple requests.

Properties

NameTypeConstraintsDescription
max_cache_sizenumberMinimum: 0

Maximum: unlimited

Default value: 0
The maximum number of persistent connections which will be stored in the cache for future use. Connections with resource servers will be cached for future use unless the configured limit is reached, or the connection: close header is received in the HTTP response. Please note that if enabled there is the potential for different user sessions to use the same connection when processing requests. To disable the persistent connection functionality simply specify a value of 0.
connection_timeoutnumberMinimum: 0

Maximum: unlimited

Default value: 5
The maximum number of seconds a persistent connection can remain idle in the cache before the connection is cleaned up and closed by the IAG. This value should be lower than the configured maximum connection lifetime for the resource server. This behaviour is controlled for the Apache Web server, as an example only, by the KeepAliveTimeout configuration entry.

Example

resource_servers:
  - path: "/example"
    # ...
    persistent_connections:
      max_cache_size: 100
      connection_timeout: 5

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