minor: documentation and test updates for RUBY-378
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@ -17,7 +17,7 @@ The Ruby driver allows you to set read preference on each of four levels: the co
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Objects will inherit the default read preference from their parents. Thus, if you set a read preference of `{:read => :secondary}` when creating
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a new connection, then all databases and collections created from that connection will inherit the same setting. See this code example:
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@con = Mongo::ReplSetConnection.new([['localhost', 27017], ['localhost', 27018]], :read => :secondary)
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@con = Mongo::ReplSetConnection.new(['localhost:27017','localhost:27018'], :read => :secondary)
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@db = @con['test']
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@collection = @db['foo']
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@collection.find({:name => 'foo'})
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@ -11,13 +11,13 @@ takes a list of seed nodes followed by any connection options. You'll want to sp
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the driver more chances to connect in the event that any one seed node is offline. Once the driver connects, it will
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cache the replica set topology as reported by the given seed node and use that information if a failover is later required.
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@connection = ReplSetConnection.new(['n1.mydb.net', 27017], ['n2.mydb.net', 27017], ['n3.mydb.net', 27017])
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@connection = ReplSetConnection.new(['n1.mydb.net:27017', 'n2.mydb.net:27017', 'n3.mydb.net:27017'])
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### Read slaves
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If you want to read from a secondary node, you can pass :read => :secondary to ReplSetConnection#new.
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@connection = ReplSetConnection.new(['n1.mydb.net', 27017], ['n2.mydb.net', 27017], ['n3.mydb.net', 27017],
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@connection = ReplSetConnection.new(['n1.mydb.net:27017', 'n2.mydb.net:27017', 'n3.mydb.net:27017'],
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:read => :secondary)
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A random secondary will be chosen to be read from. In a typical multi-process Ruby application, you'll have a good distribution of reads across secondary nodes.
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@ -48,18 +48,18 @@ having to manually restart your app server, then you should enable it. You can e
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synchronously, which will refresh the replica set data in a synchronous fashion (which may
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ocassionally slow down your queries):
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@connection = ReplSetConnection.new(['n1.mydb.net', 27017], :refresh_mode => :sync)
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@connection = ReplSetConnection.new(['n1.mydb.net:27017'], :refresh_mode => :sync)
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If you want to change the default refresh interval of 90 seconds, you can do so like this:
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@connection = ReplSetConnection.new(['n1.mydb.net', 27017], :refresh_mode => :sync,
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@connection = ReplSetConnection.new(['n1.mydb.net:27017'], :refresh_mode => :sync,
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:refresh_interval => 60)
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Do not set this value to anything lower than 30, or you may start to experience performance issues.
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You can also disable refresh mode altogether:
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@connection = ReplSetConnection.new(['n1.mydb.net', 27017], :refresh_mode => false)
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@connection = ReplSetConnection.new(['n1.mydb.net:27017'], :refresh_mode => false)
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And you can call `refresh` manually on any replica set connection:
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@ -67,13 +67,13 @@ module Mongo
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# @example Connect to a replica set and provide two seed nodes. Note that the number of seed nodes does
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# not have to be equal to the number of replica set members. The purpose of seed nodes is to permit
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# the driver to find at least one replica set member even if a member is down.
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# ReplSetConnection.new(['localhost', 30000], ['localhost', 30001])
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# ReplSetConnection.new(['localhost:30000', 'localhost:30001'])
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#
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# @example Connect to a replica set providing two seed nodes and ensuring a connection to the replica set named 'prod':
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# ReplSetConnection.new(['localhost', 30000], ['localhost', 30001], :name => 'prod')
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# ReplSetConnection.new(['localhost:30000', 'localhost:30001'], :name => 'prod')
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#
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# @example Connect to a replica set providing two seed nodes and allowing reads from a secondary node:
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# ReplSetConnection.new(['localhost', 30000], ['localhost', 30001], :read => :secondary)
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# ReplSetConnection.new(['localhost:30000', 'localhost:30001'], :read => :secondary)
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#
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# @see http://api.mongodb.org/ruby/current/file.REPLICA_SETS.html Replica sets in Ruby
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#
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@ -13,7 +13,7 @@ class ReadTest < Test::Unit::TestCase
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context "Read mode on replica set connection: " do
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setup do
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@read_preference = :secondary
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@con = Mongo::ReplSetConnection.new(['localhost', 27017], :read => @read_preference, :connect => false)
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@con = Mongo::ReplSetConnection.new(['localhost:27017'], :read => @read_preference, :connect => false)
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end
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should "store read preference on Connection" do
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