While using bitcoind json rpc api, is there anyway to get a callback when an address receives a transaction ? or should i keep polling the api asking for new transactions ? if the latter, i guess i'll do too much i/o traffic when waiting for transactions from 200 users ...
any recommendation for a good hosting with such a disk space ? and i guess i dont need too much cpu as you do, did you take such config after studying your requirements ?
I see people running bitcoind on beaglebones with 512 ram, they say it's working, so am trying to calibrate the best config with the right cost for me ...
I actually run a hosting company (which is currently under re-development and in the future will be creating custom cryptocurrency imaged servers for renting). This was just a spare VPS I had for testing but I'll be using this to collect data off in the future.