Adds support for sending queries using ActiveRecord::Base.connection.… #354
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Currently if you do:
any available slave groups will be ignored and the select query will be run on the master instance. This feature makes slight modifications to how we determine if a select query is being run and makes the previous example attempt to send the query to any available slave groups.
The regex I am using to detect select queries will not detect every possible type of select query, but it should track the major use cases and should be a good start. Later on, we can update it so that also detects some of the more minor cases.