Accelerating File Transfer: Quicklinks
IntroductionBeginning with the introductory article on Acceleration, and continuing with the articles shown in the list above, we have been discussing a few of the ways a software-only solution can accelerate file transfer. In the fourth and final article on the subject, we are going to talk a bit about the technology that lies at the core of the FileCatalyst accelerated transfer solution: using an alternative to FTP or other TCP-based systems.
The problem with FTPAs discussed in earlier articles, the problem with FTP is its approach to reliability. From the FileCatalyst whitepaper, “Accelerating File Transfers”:
TCP responds to latency by adjusting the amount of unacknowledged data that can be on the link before waiting for a reply. …TCP has limits on the size of this value, so when the bandwidth‐delay product exceeds a certain threshold, the result is a lot of waiting or “dead air”.In layman’s terms, by trying its best to be reliable, TCP can really throttle down the speed of transfers over poor networks. Since it is a layer on top of TCP, this problem extends to FTP.