MOUNTAIN VIEW, Calif.--(BUSINESS WIRE)--RethinkDB, an open-source scalable database for the realtime web, today announced that 2015 has been a record growth year. Now with more than 120,000 developers using its realtime database, the company experienced 30 percent growth each month over the past year. "We are thrilled by the phenomenal growth we have seen this year," said Slava Akhmechet, co-founder of RethinkDB. "The addressable market for realtime databases is $3.5 billion and we know that ma