A cache-buster is a unique piece of code that prevents a browser from reusing an ad it has already seen and cached, or saved, to a temporary memory file.

The cache-buster doesn’t stop a browser from caching the file, it just prevents it from reusing it. In most cases, this is accomplished with nothing more than a random number inserted into the ad tag on each page load. The random number makes every ad call look unique to the browser and therefore prevents it from associating the tag with a cached file, forcing a new call to the ad server.

Cache-busting maximizes publisher inventory, keeps the value and meaning of an impression constant, and helps minimize discrepancies between Publisher and Marketer delivery reports.

What is timestamp?

A timestamp is the current time of an event that is recorded by a computer.

Through mechanisms such as the Network Time Protocol ( NTP ), a computer maintains accurate current time, calibrated to minute fractions of a second. Such precision makes it possible for networked computers and applications to communicate effectively.

The timestamp mechanism is used for a wide variety of synchronization purposes, such as assigning a sequence order for a multi-event transaction so that if a failure occurs the transaction can be voided.

Another way that a timestamp is used is to record time in relation to a particular starting point. In IP telephony , for example, the Real-time Transport Protocol ( RTP ) assigns sequential timestamps to voice packet s so that they can be buffer ed by the receiver, reassembled, and delivered without error. When writing a program, the programmer is usually provided an application program interface for a timestamp that the operating system can provide during program execution.

BangPham

Wednesday, June 17, 2015

What is the usage of “no script”?

What is the usage of “no script”?

What is cache buster ? How cache buster works ?

A cache-buster is a unique piece of code that prevents a browser from reusing an ad it has already seen and cached, or saved, to a temporary memory file.

What is timestamp?

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