Each Facebook Chat user now needs to be notified whenever one of his/her friends (a) takes an action such as sending a chat message or loads a Facebook page (if tracking idleness via a last-active timestamp) or (b) transitions between idleness states (if representing idleness as a state machine with states like "idle-for-1-minute", "idle-for-2-minutes", "idle-for-5-minutes", "idle-for-10-minutes", etc.).Note that approach (a) changes the sending a chat message / loading a Facebook page from a one-to-one communication into a multicast to all online friends, while approach (b) ensures that users who are neither chatting nor browsing Facebook are nonetheless generating server load.[…] Continue reading Virtual reality (VR) is inspiring and has an enormous range of possible industrial uses: learning to fly without ever having to take off …
M chatmobi Free pussy site no sign up or credit card
Unlike a three-guys-in-a-garage startup, we don't have the luxury of scaling out infrastructure to keep pace with user growth; when your feature's userbase will go from 0 to 70 million practically overnight, scalability has to be baked in from the start.
The project I'm currently working on, Facebook Chat, offered a nice set of software engineering challenges: The most resource-intensive operation performed in a chat system is not sending messages.
One by one, boxes […] Continue reading For decades, cable clamps have been trusty servants to installers and maintenance engineers.
But RCA, P and aluminium clamps have also always presented an inherent problem that makes working with […] Continue reading The use of flexible gel products is a tried-and-tested means of insulating electronic components or electrical connections in the outdoors.
Recently at Hellermann Tyton we took this to heart when appraising our manual cable tensioning tool MK7, which has […] Continue reading The trend towards lighting with compact fluorescent lamps and LED downlights is constantly growing in offices large buildings.