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  2. HTTP persistent connection - Wikipedia

    en.wikipedia.org/wiki/HTTP_persistent_connection

    However, the default connection timeout of Apache httpd 1.3 and 2.0 is as little as 15 seconds [6] [7] and just 5 seconds for Apache httpd 2.2 and above. [8] [9] The advantage of a short timeout is the ability to deliver multiple components of a web page quickly while not consuming resources to run multiple server processes or threads for too ...

  3. Keepalive - Wikipedia

    en.wikipedia.org/wiki/Keepalive

    Keepalive time is the duration between two keepalive transmissions in idle condition. TCP keepalive period is required to be configurable and by default is set to no less than 2 hours. Keepalive interval is the duration between two successive keepalive retransmissions, if acknowledgement to the previous keepalive transmission is not received.

  4. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    The server either does not recognize the request method, or it lacks the ability to fulfil the request. Usually this implies future availability (e.g., a new feature of a web-service API). 502 Bad Gateway The server was acting as a gateway or proxy and received an invalid response from the upstream server. 503 Service Unavailable

  5. Nginx - Wikipedia

    en.wikipedia.org/wiki/Nginx

    Nginx is free and open-source software, released under the terms of the 2-clause BSD license. A large fraction of web servers use Nginx, [10] often as a load balancer. [11] A company of the same name was founded in 2011 to provide support and NGINX Plus paid software. [12] In March 2019, the company was acquired by F5 for $670 million. [13]

  6. macOS version history - Wikipedia

    en.wikipedia.org/wiki/MacOS_version_history

    Starting with Mac OS X 10.2 Jaguar, big-cat names were used as marketing names; starting with OS X 10.9 Mavericks, names of locations in California were used as marketing names instead. The current major version, macOS 15 Sequoia , was announced on June 10, 2024, at WWDC 2024 and released on September 16 of that year.

  7. macOS Catalina - Wikipedia

    en.wikipedia.org/wiki/MacOS_Catalina

    macOS Catalina (version 10.15) is the sixteenth major release of macOS, Apple Inc.'s desktop operating system for Macintosh computers. It is the successor to macOS Mojave and was announced at WWDC 2019 on June 3, 2019 and released to the public on October 7, 2019.

  8. Adjust the screen saver settings on Mac - AOL Help

    help.aol.com/articles/adjust-the-screen-saver...

    1. Click the Apple menu, and then click System Preferences.. 2. Click the Desktop & Screen Saver icon.. 3. Next to Start screen saver, click and drag the slider back and forth from the minimum amount of time to the maximum amount of time several times.

  9. List of Apple operating systems - Wikipedia

    en.wikipedia.org/wiki/List_of_Apple_operating...

    Mac OS X Server 10.3 – code name Panther; Mac OS X Server 10.4 – code name Tiger; Mac OS X Server 10.5 – also marketed as Leopard Server; Mac OS X Server 10.6 – also marketed as Snow Leopard Server; Starting with Lion, there is no separate Mac OS X Server operating system. Instead the server components are a separate download from the ...