FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived devoting one thread to each user, which can be very expensive. To minimize the cost of concurrent connections, Tornado uses a single-threaded event loop. This means that all appli- cation code should aim to

org/wiki/FriendFeed]. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling [https://en.wikipedia.org/wiki/Push_technology#Long_polling] org/wiki/FriendFeed]. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling [http://en.wikipedia.org/wiki/Push_technology#Long_polling] devoting one thread to each user, which can be very expensive. To minimize the cost of concurrent connections, Tornado uses a single-threaded event loop. This means that all application code should aim to

than the raw Unix socket API. The first call to listen will create a server waiting for incoming connections on the specified port (2000) in this case. The same function may also be used to create various can add or remove worker processes. • All processes can directly communicate with each other. Connections between workers (using the in-built TCP/IP transport) is established in the following manner: AND DISTRIBUTED COMPUTING 348 • The master process parses this information and sets up TCP/IP connections to each worker. • Every worker is also notified of other workers in the cluster. • Each worker

than the raw Unix socket API. The first call to listen will create a server waiting for incoming connections on the specified port (2000) in this case. The same function may also be used to create various can add or remove worker processes. • All processes can directly communicate with each other. Connections between workers (using the in-built TCP/IP transport) is established in the following manner: AND DISTRIBUTED COMPUTING 348 • The master process parses this information and sets up TCP/IP connections to each worker. • Every worker is also notified of other workers in the cluster. • Each worker

than the raw Unix socket API. The first call to listen will create a server waiting for incoming connections on the specified port (2000) in this case. The same function may also be used to create various can add or remove worker processes. • All processes can directly communicate with each other. Connections between workers (using the in-built TCP/IP transport) is established in the following manner: AND DISTRIBUTED COMPUTING 348 • The master process parses this information and sets up TCP/IP connections to each worker. • Every worker is also notified of other workers in the cluster. • Each worker

than the raw Unix socket API. The first call to listen will create a server waiting for incoming connections on the specified port (2000) in this case. The same function may also be used to create various can add or remove worker processes. • All processes can directly communicate with each other. Connections between workers (using the in-built TCP/IP transport) is established in the following manner: AND DISTRIBUTED COMPUTING 352 • The master process parses this information and sets up TCP/IP connections to each worker. • Every worker is also notified of other workers in the cluster. • Each worker

than the raw Unix socket API. The first call to listen will create a server waiting for incoming connections on the specified port (2000) in this case. The same function may also be used to create various can add or remove worker processes. • All processes can directly communicate with each other. Connections between workers (using the in-built TCP/IP transport) is established in the following manner: AND DISTRIBUTED COMPUTING 351 • The master process parses this information and sets up TCP/IP connections to each worker. • Every worker is also notified of other workers in the cluster. • Each worker

than the raw Unix socket API. The first call to listen will create a server waiting for incoming connections on the specified port (2000) in this case. The same function may also be used to create various can add or remove worker processes. • All processes can directly communicate with each other. Connections between workers (using the in-built TCP/IP transport) is established in the following manner: AND DISTRIBUTED COMPUTING 351 • The master process parses this information and sets up TCP/IP connections to each worker. • Every worker is also notified of other workers in the cluster. • Each worker

than the raw Unix socket API. The first call to listen will create a server waiting for incoming connections on the specified port (2000) in this case. The same function may also be used to create various can add or remove worker processes. • All processes can directly communicate with each other. Connections between workers (using the in-built TCP/IP transport) is established in the following manner: AND DISTRIBUTED COMPUTING 351 • The master process parses this information and sets up TCP/IP connections to each worker. • Every worker is also notified of other workers in the cluster. • Each worker

than the raw Unix socket API. The first call to listen will create a server waiting for incoming connections on the specified port (2000) in this case. The same function may also be used to create various can add or remove worker processes. • All processes can directly communicate with each other. Connections between workers (using the in-built TCP/IP transport) is established in the following manner:CHAPTER available to the master pro- cess. • The master process parses this information and sets up TCP/IP connections to each worker. • Every worker is also notified of other workers in the cluster. • Each worker