framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling framework and asynchronous networking library, originally developed at FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling blocks when it waits for something to happen before returning. A function may block for many reasons: network I/O, disk I/O, mutexes, etc. In fact, every function blocks, at least a little bit, while it is running

originally developed at FriendFeed [https://en.wikipedia.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 loop tornado.iostream — Convenient wrappers for non-blocking socketstornado.netutil — Miscellaneous network utilities tornado.tcpclient — IOStream connection factory tornado.tcpserver — Basic IOStream-based originally developed at FriendFeed [https://en.wikipedia.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

ClusterManagers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347 26.11 Specifying Network Topology (Experimental) . . . . . . . . . . . . . . . . . . . . . . 353 26.12 Noteworthy external jl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392 30.3 Network transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394 30.4 External interpolation for I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466 35.22 Optimize network I/O during parallel execution . . . . . . . . . . . . . . . . . . . . 467 35.23 Fix deprecation

ClusterManagers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347 26.11 Specifying Network Topology (Experimental) . . . . . . . . . . . . . . . . . . . . . . 353 26.12 Noteworthy external jl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392 30.3 Network transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394 30.4 External interpolation for I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466 35.22 Optimize network I/O during parallel execution . . . . . . . . . . . . . . . . . . . . 467 35.23 Fix deprecation

ClusterManagers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 347 26.11 Specifying Network Topology (Experimental) . . . . . . . . . . . . . . . . . . . . . . 353 26.12 Noteworthy external jl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392 30.3 Network transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394 30.4 External interpolation for I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466 35.22 Optimize network I/O during parallel execution . . . . . . . . . . . . . . . . . . . . 467 35.23 Fix deprecation

ClusterManagers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326 25.11 Specifying Network Topology (Experimental) . . . . . . . . . . . . . . . . . . . . . . 332 25.12 Noteworthy external jl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370 29.3 Network transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371 29.4 External interpolation for I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436 34.20 Optimize network I/O during parallel execution . . . . . . . . . . . . . . . . . . . . 437CONTENTS vii 34.21 Fix

ClusterManagers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326 25.11 Specifying Network Topology (Experimental) . . . . . . . . . . . . . . . . . . . . . . 332 25.12 Noteworthy external jl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 370 29.3 Network transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371 29.4 External interpolation for I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436 34.20 Optimize network I/O during parallel execution . . . . . . . . . . . . . . . . . . . . 437CONTENTS vii 34.21 Fix

ClusterManagers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350 26.11 Specifying Network Topology (Experimental) . . . . . . . . . . . . . . . . . . . . . . 356 26.12 Noteworthy external jl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395 30.3 Network transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398 30.4 External . . . . . . . . . . . . . . . . . . . . 1185 52 Constants 1186 53 Filesystem 1191 54 I/O and Network 1218 54.1 General I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ClusterManagers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351 26.11 Specifying Network Topology (Experimental) . . . . . . . . . . . . . . . . . . . . . . 357 26.12 Noteworthy external jl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396 30.3 Network transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399 30.4 External . . . . . . . . . . . . . . . . . . . . 1183 52 Constants 1184 53 Filesystem 1189 54 I/O and Network 1216 54.1 General I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ClusterManagers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 350 26.11 Specifying Network Topology (Experimental) . . . . . . . . . . . . . . . . . . . . . . 356 26.12 Noteworthy external jl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395 30.3 Network transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 398 30.4 External . . . . . . . . . . . . . . . . . . . . 1182 52 Constants 1183 53 Filesystem 1188 54 I/O and Network 1215 54.1 General I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .