I usually use whatever messenger my peers are using. That's mostly Skype and very rarely Google Talk. There are however situations where security takes precedence over size of the network. Skype was once secure, but these days everything goes through Microsoft's and NSA's servers. Google Talk doesn't even pretend to be secure.
April 27, 2015
April 12, 2015
I work at WBP online where we make low-latency software for small-time traders. The software limits losses these traders suffer from the big high-frequency traders and gives them an edge over traders without any low latency information. While useful in the context of current market rules, I believe this whole low-latency trading is an inefficiency in the system with no real value, something to be optimized out of the system.
April 10, 2015
High availability means that the service never goes down. But what should the application guard against? What threats is the application facing? Is high availability even possible?