WhatsApp passes 800,000,000 active users

whatsapp-numbers

TechCrunch is reporting on WhatsApp passing the 800,000,000 active users mark.  Almost exactly a year ago, it was at 500 million active users.  I don’t care much about WhatsApp’s business or service, but from the technical point of view this is quite significant.  That’s almost a million active users acquired every day for the last year.  That’d be a challenge for anyone to handle.  Thinking that this growth might have been not too linear gives me digital goose bumps.

I haven’t seen anything recent describing their infrastructure, but this article from last year provides a starting point for the imagination:  Erland + FreeBSD + 550 servers, with preference for larger box with loads of RAM and cores.  I’m sure that have grown quite a bit in a year too.

Working Across Multiple Time Zones: Tools and Strategies That Help Connect

Working Across Multiple Time Zones: Tools and Strategies That Help Connect – I’m not working in a distributed team yet, but we are already using some of the tools mentioned here.

Tox – secure instant messaging, video conferencing, and more

Tox – secure instant messaging, video conferencing, and more.

tox

With the rise of government monitoring programs, Tox provides an easy to use application that allows you to connect with friends and family without anyone else listening in. While other big-name services require you to pay for features, Tox is totally free, and comes without advertising.

Useful Skype commands, roles, and emoticons

Just by accident I came across this list of Skype commands and roles.  I only knew two or three.  Apparently, there is much more.  For those of us who use Skype on multiple devices, checkout /showplaces and /remotelogout :

  • /showplaces – Lists other instances where this Skype name is currently signed in.
  • /remotelogout – Sign out all other instances except the current one. This will also stop push notifications on all other instances.

And while we are on the subject of not so well-known Skype features, have a look a the complete list of emoticons (smileys) that you can use in the chat.  These include some more additional icons and country flags.