Documentation, Release 6.5.1 2 CONTENTSCHAPTER ONE QUICK LINKS • Current version: 6.5.1 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements • Stack Overflow Documentation, Release 6.5.1 6 Chapter 2. Hello, worldCHAPTER THREE THREADS AND WSGI Tornado is different from most Python web frameworks. It is not based on WSGI, and it is typically run with only one thread WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run

applications that require a long-lived connection to each user. Quick links Current version: 6.1 (download from PyPI [https://pypi.python.org/pypi/tornado], release notes) Source (GitHub) [https://github.com/tornadoweb/tornado] [https://github.com/tornadoweb/tornado/tree/stable/demos/chat]. Threads and WSGI Tornado is different from most Python web frameworks. It is not based on WSGI [https://wsgi.readthedocs.io/en/latest/], and WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run

Documentation, Release 5.1.1 2 Contents CHAPTER 1 Quick links • Current version: 5.1.1 (download from PyPI, release notes) • Source (github) • Mailing lists: discussion and announcements • Stack Overflow Documentation, Release 5.1.1 6 Chapter 2. Hello, world CHAPTER 3 Threads and WSGI Tornado is different from most Python web frameworks. It is not based on WSGI, and it is typically run with only one thread WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run

Tornado Documentation, Release 6.1 2 Contents CHAPTER 1 Quick links • Current version: 6.1 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements • Stack Overflow Documentation, Release 6.1 6 Chapter 2. Hello, world CHAPTER 3 Threads and WSGI Tornado is different from most Python web frameworks. It is not based on WSGI, and it is typically run with only one thread WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run

that require a long-lived connection to each user. Quick links Current version: 4.5.3 (download from PyPI [https://pypi.python.org/pypi/tornado], release notes) Source (github) [https://github.com/tornadoweb/tornado] the best performance and scalability only Linux (with epoll) and BSD (with kqueue) are recommended for production deployment (even though Mac OS X is derived from BSD and supports kqueue, its networking not possible to add a native Tornado Windows IOLoop implementation or leverage Windows’ IOCP support from frameworks like AsyncIO or Twisted. Documentation This documentation is also available in PDF and

Documentation, Release 4.5.3 2 Contents CHAPTER 1 Quick links • Current version: 4.5.3 (download from PyPI, release notes) • Source (github) • Mailing lists: discussion and announcements • Stack Overflow the best performance and scalability only Linux (with epoll) and BSD (with kqueue) are recommended for production deployment (even though Mac OS X is derived from BSD and supports kqueue, its networking not possible to add a native Tornado Windows IOLoop implementation or leverage Windows’ IOCP support from frameworks like AsyncIO or Twisted. 7 Tornado Documentation, Release 4.5.3 8 Chapter 3. Installation

that require a long-lived connection to each user. Quick links Current version: 6.5.1 (download from PyPI [https://pypi.python.org/pypi/tornado], release notes) Source (GitHub) [https://github.com/tornadoweb/tornado] [https://github.com/tornadoweb/tornado/tree/stable/demos/chat]. Threads and WSGI Tornado is different from most Python web frameworks. It is not based on WSGI [https://wsgi.readthedocs.io/en/latest/], and WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run

Documentation, Release 6.4 2 CONTENTS CHAPTER ONE QUICK LINKS • Current version: 6.4 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements • Stack Overflow Documentation, Release 6.4 6 Chapter 2. Hello, world CHAPTER THREE THREADS AND WSGI Tornado is different from most Python web frameworks. It is not based on WSGI, and it is typically run with only one thread WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run

Documentation, Release 6.4 2 CONTENTS CHAPTER ONE QUICK LINKS • Current version: 6.4 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements • Stack Overflow Documentation, Release 6.4 6 Chapter 2. Hello, world CHAPTER THREE THREADS AND WSGI Tornado is different from most Python web frameworks. It is not based on WSGI, and it is typically run with only one thread WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run

Documentation, Release 6.4 2 CONTENTS CHAPTER ONE QUICK LINKS • Current version: 6.4 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements • Stack Overflow Documentation, Release 6.4 6 Chapter 2. Hello, world CHAPTER THREE THREADS AND WSGI Tornado is different from most Python web frameworks. It is not based on WSGI, and it is typically run with only one thread WSGI. In general, Tornado code is not thread-safe. The only method in Tornado that is safe to call from other threads is IOLoop.add_callback. You can also use IOLoop.run_in_executor to asynchronously run