Log - Apache Common Log Format

Data System Architecture


Apache Common Log Format is a Log format for a HTTP request received by a web server that comes from the Apache Web Server.

Apache Common Log Format

Log file entry for a request: - - [24/Jul/1973:08:32:01 -0400] "GET /images/gerardnico.gif HTTP/1.0" 200 2564


  • is the IP address (or host name, if available) of the client (remote host) which made the request to the server.
  • - The “hyphen” in the output indicates that the requested piece of information (user identity from remote machine) is not available.
  • - The “hyphen” in the output indicates that the requested piece of information (user identity from local logon) is not available.
  • [24/Jul/1973:08:32:01 -0400] The server “end time” to process the request. The format is: [day/month/year:hour:minute:second timezone]
    • day = 2 digits
    • month = 3 letters
    • year = 4 digits
    • hour = 2 digits
    • minute = 2 digits
    • second = 2 digits
    • zone = (+ | -) 4 digits
  • “GET /images/launch-logo.gif HTTP/1.0” The first line of the request string from the client. It consists of three components:
  • 200 The status code
  • 2564 The size of the object returned to the client, not including the response headers. If no content was returned to the client, this value will be “-” (or sometimes 0).

Data Set

Documentation / Reference

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