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What's the maximum number of concurrent connections that a browser will make to download resources specified in a HTML page? Does it vary from browser to browser/connection speed?
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Chrome has a limit of 6 connections per host name, and a max of 10 connections. This essentially means that it can handle 6 requests at a time coming from the same host, and will handle 4 more coming from another host at the same time.
By default, SQL Server allows a maximum of 32767 concurrent connections which is the maximum number of users that can simultaneously log in to the SQL server instance. How to bypass this limit.
On the TCP level the tuple (source ip, source port, destination ip, destination port) must be unique for each simultaneous connection. That means a single client cannot open more than 65535 simultaneous connections to a single server. But a server can (theoretically) serve 65535 simultaneous connections per client.
SQL Server allows a maximum 32767 concurrent connections concurrent connections, but Windows 10 OS has a limit on concurrent connections for file & printer and the limit appears to be 20.
The short answer is "about 4 to 6 connections per domain"
For more details, check out this great roundup of how many parallel connections each browser will make to a given domain
Results summarized below...
+----------------------+------------+------------+ |Browser | HTTP/1.1 | HTTP/1.0 | +----------------------+------------+------------+ |IE 6,7 | 2 ## | 4 #### | |IE 8 | 6 ###### | 6 ###### | |Firefox 2 | 2 ## | 8 ######## | |Firefox 3 | 6 ###### | 6 ###### | |Safari 3,4 | 4 #### | 4 #### | |Chrome 1,2 | 6 ###### | ? | |Chrome 3 | 4 #### | 4 #### | |Chrome 4+ | 6 ###### | ? | |iPhone 2 | 4 #### | ? | |iPhone 3 | 6 ###### | ? | |iPhone 4 | 4 #### | ? | |Opera 9.63,10.00alpha | 4 #### | 4 #### | |Opera 10.51+ | 8 ######## | ? | +----------------------+------------+------------+
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