Creates a new
ConnectionPool object. spec is a ConnectionSpecification object
which describes database connection
information (e.g. adapter, host name, username, password, etc), as well as
the maximum size for this ConnectionPool.
The default ConnectionPool maximum size is 5.
# File activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb, line 233
def initialize(spec)
super()
@spec = spec
@checkout_timeout = (spec.config[:checkout_timeout] && spec.config[:checkout_timeout].to_f) || 5
@reaper = Reaper.new(self, (spec.config[:reaping_frequency] && spec.config[:reaping_frequency].to_f))
@reaper.run
# default max pool size to 5
@size = (spec.config[:pool] && spec.config[:pool].to_i) || 5
# The cache of reserved connections mapped to threads
@reserved_connections = ThreadSafe::Cache.new(:initial_capacity => @size)
@connections = []
@automatic_reconnect = true
@available = Queue.new self
end
