7 Up up with the formula for a lemon-lime soft drink in 1929. The product, originally named "Bib-Label Lithiated Lemon-Lime Soda", was launched two weeks before the Wall Street Crash of 1929. It contained lithium citrate, a mood-stabilizing drug, until 1948. It was one of a number of patent medicine products popular in the late-19th and early-20th centuries. Its name was later shortened to "7 Up Lithiated Lemon Soda" before being further shortened to just "7 Up" by 1936. A myth exists that the 7 Up name comes from the drink having a pH over 7. That would make it neutral or
Sprite (operating system) compiling the Sprite system) can appear very fast. Work on the "early" Sprite outlined above ended around 1987, but was improved during the next year. Starting in 1990 Sprite was used as the basis for development of the first log-structured file system (LFS), development of which continued until about 1992. LFS dramatically increases the performance of file writes at the expense of read performance. Under Sprite, this tradeoff is particularly useful because most read access is cached anyway—that is, Sprite systems typically perform fewer reads than a normal Unix system. LFS-like systems also allow for much easier crash recovery, which