Ho John Lee's Weblog

These are my links for February 26th through February 27th:

• What to do if your startup is about fail (or “Don’t Stop Believing”) « The Jason Calacanis Weblog – Practical advice for startups facing a slowing market and limited cash.
• 25 Forex-Related Twitter Accounts Worth Following –
• How FriendFeed uses MySQL to store schema-less data – Bret Taylor’s blog – Implementation notes on how FriendFeed manages very large data sets in which the schema changes relatively frequently.
• The "A Hard Day’s Night" Chord – Rock’s Holy Grail@Everything2.com – Exactly which notes on the guitar. Plus the piano.
• Beatles Unknown "A Hard Day’s Night" Chord Mystery Solved Using Fourier Transform – Four years ago, inspired by reading news coverage about the song’s 40th anniversary, Jason Brown of Dalhousie’s Department of Mathematics decided to try and see if he could apply a mathematical calculation known as Fourier transform to solve the Beatles’ riddle. The process allowed him to decompose the sound into its original frequencies using computer software and parse out which notes were on the record.

These are my links for February 25th through February 26th:

• Urbantastic – Tech Tuesday: The Fiddly Bits – More on making use of more capable clients. "In most frameworks, dynamic data and static HTML templates are first combined on the server and then sent to the client. However, now that Javascript is usable, performing the combination on the client side is a very attractive alternative."
• John Resig – Talk: Performance Improvements in Browsers – Video and slides from Feb 2009 presentation at Google on trends in Javascript performance, web applications, making use of higher performance, stateful browser clients.
• The Bayeux Protocol – specification for publish-subscribe on comet/HTTP
• Introduction to Bayeux Protocol (HTTP Publish-Subscribe) – Overview of publish-subscribe with bayeux and comet.
• Building and Scaling a Startup on Rails: 12 Things We Learned the Hard Way – Axon Flux – A Ruby on Rails Blog – Practical notes on scalable web development from a Rails perspective, much of this is generally applicable.
• Rate limiting with memcached – Using memcached to maintain state to limit API and other network interactions by IP address, user ID, etc. This is the method used to implement API rate limits at Twitter.