I am a web developer and software engineer currently living in Delhi, India. My interests range from technology to entrepreneurship. I am also interested in running, fitness, and programming.
Timing breakdown phases explained Here's more information about each of the phases you may see in the Timing tab: Queueing (no-color, transparent, white ) . The browser queues requests when: The request was postponed by the rendering engine because it's considered lower priority than critical resources (such as scripts/styles). This often happens with images. The request was put on hold to wait for an unavailable TCP socket that's about to free up. The request was put on hold because the browser only allows six TCP connections per origin on HTTP 1. Time spent making disk cache entries (typically very quick.) Stalled/Blocking (grey) . Time the request spent waiting before it could be sent. It can be waiting for any of the reasons described for Queueing. Additionally, this time is inclusive of any time spent in proxy negotiation. Proxy Negotiation (grey): Time spent negotiating with a proxy server connection. DNS Lookup (Dark green) . Time spent p...
What is HDR photography High Dynamic Range imaging How HDR work Instead of just taking one photo, HDR uses three photos, taken at different exposures. And combine all them together into a single photo. Over exposed Normal Under exposed When you should use HDR Landscapes : Big landscape photos usually have a lot of contrast between the sky and land, which is difficult for your camera to deal with in just one photo. With HDR, you can capture the sky’s detail without making the land look too dark, and vice versa. Portraits in sunlight : We all know that lighting is one of the most important aspects of a good photo, but too much lighting on someone’s face—like harsh sunlight—can cause dark shadows, bright glare, and other unflattering characteristics. HDR can even that all out and make your subject look better. Low-light and backlit scenes (see above): If your photo is looking a little too dark—which often happens if your scene has too much backlight—H...
OSI model Open system interconnection model Communication between two computers connected through a cable and RJ connectors. Each layer is a package of protocols The app layer is not the application itself, but the protocols packages. 7 Layer model Application Layer: Uses protocols to access net Presentation Layer: Convert text/audio/video into binary Session Layer: Establishes the connection Transport Layer: Converts into segments and adds port number and sequence number into each segment. Network Layer: Convert segments into packets by adding logical address Data link Layer: Converts packets into frame by adding physical address Physical Layer: Transmits the data by converting into signals Application layer Is used by applications that use the internet like Google chrome, skype. Application layer provides services to network applications with the help of protocols to perform user activities. Protocols: HTT...
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