#Development unicorn https upgrade#
You can upgrade unicorn, your entire application, libraries and even your Ruby interpreter without dropping clients. Nginx-style binary upgrades without losing connections. unicorn also takes steps to ensure multi-line log entries from one request all stay within the same file. This allows logrotate to rotate files atomically and quickly via rename instead of the racy and slow copytruncate method. Requests never pile up behind a busy worker process.ĭoes not care if your application is thread-safe or not, workers all run within their own isolated address space and only serve one client at a time for maximum robustness.īuiltin reopening of all log files in your application via USR1 signal. Load balancing is done entirely by the operating system kernel. unicorn can spawn and manage any number of worker processes you choose to scale to your backend. There is no need to manage multiple processes or ports yourself. Process management: unicorn will reap and restart workers that die from broken apps.
We cut out everything that is better supported by the operating system, nginx or Rack. Featuresĭesigned for Rack, Unix, fast clients, and ease-of-debugging. Slow clients should only be served by placing a reverse proxy capable of fully buffering both the the request and response in between unicorn and slow clients. Unicorn is an HTTP server for Rack applications designed to only serve fast clients on low-latency, high-bandwidth connections and take advantage of features in Unix/Unix-like kernels.
Unicorn: Rack HTTP server for fast clients and Unix Unicorn Configurator HttpServer OobGC PrereadInput StreamInput TeeInput Util Worker
#Development unicorn https license#
We critically examine local officials' susceptibility to being seduced by smart city rhetoric, and highlight their troubling willingness to cede public land, power, citizen privacy, and data governance to corporate actors in their entrepreneurial quest to create an instant ‘tech’ hub.Unicorn: Rack HTTP server for fast clients and Unix Application_Timeouts CONTRIBUTORS DESIGN FAQ HACKING ISSUES KNOWN_ISSUES LICENSE Links NEWS PHILOSOPHY README SIGNALS Sandbox TUNING unicorn_1 This article connects Union Point to the global phenomenon of tabula rasa smart city developments and suggests that Union Point reproduces problems of earlier smart city experiments built from scratch in the Middle East and Asia. This alignment of interests in the use of ‘tech’ to engineer the ‘city of the future’, and the pervasive idealism, entrepreneurialism, and ‘high-risk, high-rewards’ attitudes that enable ‘instant’ smart mega-developments, is characterized by what we term ‘unicorn planning’. We use the case of Union Point to think through why public and private actors with conventionally competing interests, including local governments, international technology companies, and real estate developers, are collaborating enthusiastically to create smart mega-developments. More recently, similar techno-utopian enclaves are being planned in North America, including Union Point, a smart city project south of Boston announced in 2017. Over the past two decades, ‘smart’ urban mega-developments built from scratch have proliferated across the Global South.
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