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Friday, February 1, 2013

Catching...Buffering...Streaming....!!!!


Daily term but when ask to the person always create the confusion..Starting with Catching...!!!
CATCHING...
# A cache is a temporary storage location for some data or instructions that need to be accessed quickly or repeatedly..!!
# A cache's primary attribute is that it’s written to once, and read from many times. without time lags..!!!
BUFFERING...
# Buffer is something like the Bucket filled with water once and we're pin it at bottom to take the water outlet...!!!
# Now you can say Buffers differ from caches in that once filled, data is usually only read back out once. ..!!!
# Buffering is useful because bits may arrive erratically but must leave smoothly....So the bits are brought in as quickly as possible, and the output is delivered on time...!!!
STREAMING:
# Streaming is the name given to real time broadcasting of audio visual media over the internet..!!
# Very Important...Streaming requires that the average data rate of the connection is equal to or greater than the data rate of an audio visual media file..!!!
# Just in order to ensure uninterrupted playback...If the data rate of the connection falls then there will be an interruption in playback....When it resumes some of the "broadcast" will have been missed...!!!
# Depends upon:
1.Network Bandwidth..
2.Contention..
3.Server hard disks..

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