just want to add on r+, w+ and a+: r+: will open a file for both reading and writing -- file must exist w+: will create an empty file for both reading and writing a+: will open file for reading and appending

thanks!

Cool. I'm still new to Steemit and this help!

I just checked, it's already at USD8.14!!! No way! :)

Great article @Furion. Ever thinking of using Redis as cache? I think Redis would be a great cache engine for MongoDB or what I read in the internet. All the best!

Thanks. Will ping you when I have question.

Thanks @Dimarss. I'm still learning about posting in Steemit. I'm setting the rewards to be 50% / 50% (default) except for my previous post and was thinking that doing that could boost my Steem. :) Thanks

Truth is, BCN does provide the opportunity to be part of miner pool. Too bad there's to many copycat but some of us do have make profit by joining the network. Still have time before the halving!