Using nginx as HTTP load balancer Load balancing methods Default load balancing configuration Least connected load balancing Session persistence Weighted load balancing Health checks Further reading

Syntax: userid_service number; Default: userid_service IP address of the server; Context: http, server, location If identifiers are issued by multiple servers (services), each service should be assigned its own number to ensure that client identifiers are unique. For version 1 cookies, the default value is zero. For version 2 cookies, the default value is the number composed from the last four octets of the server’s IP address.

Syntax: userid_path path; Default: userid_path /; Context: http, server, location Defines a path for which the cookie is set.

Syntax: userid_p3p string | none; Default: userid_p3p none; Context: http, server, location Sets a value for the “P3P” header field that will be sent along with the cookie. If the directive is set to the special value none, the “P3P” header will not be sent in a response.

Syntax: userid_name name; Default: userid_name uid; Context: http, server, location Sets the cookie name.

Syntax: userid_mark letter | digit | = | off; Default: userid_mark off; Context: http, server, location If the parameter is not off, enables the cookie marking mechanism and sets the character used as a mark. This mechanism is used to add or change userid_p3p and/or a cookie expiration time while preserving the client identifier. A mark can be any letter of the English alphabet (case-sensitive), digit, or the “=” character. If the mark is set, it is compared with the

Syntax: userid_expires time | max | off; Default: userid_expires off; Context: http, server, location Sets a time during which a browser should keep the cookie. The parameter max will cause the cookie to expire on “31 Dec 2037 23:55:55 GMT”. The parameter off will cause the cookie to expire at the end of a browser session.

Syntax: userid_domain name | none; Default: userid_domain none; Context: http, server, location Defines a domain for which the cookie is set. The none parameter disables setting of a domain for the cookie.

Syntax: userid on | v1 | log | off; Default: userid off; Context: http, server, location Enables or disables setting cookies and logging the received cookies: on enables the setting of version 2 cookies and logging of the received cookies; v1 enables the setting of version 1 cookies and logging of the received cookies; log disables the setting of cookies, but enables logging of the received cookies; off disables the setting of cookies and logging of the rec

Syntax: user user [group]; Default: user nobody nobody; Context: main Defines user and group credentials used by worker processes. If group is omitted, a group whose name equals that of user is used.