### Asynchronous programming in .NET by Gerardo Lijs Twitter @GerardoLijs April 2019 ## Content What is Asynchronous Programming CPU-bound vs IO-bound Obsolete patterns Tasks and async/await Practical WinForms, etc) • Scalability and performance in web applications ## CPU-bound operations ## Synchronous method int GetPrimesCount(int start, int count) { return ParallelEnumerable.Range(start, count) Count(n => Enumerable.Range(2, (int)Math.Sqrt(n) - 1).All(i => n % i > 0)); } ## Asynchronous method Task GetPrimesCountAsync(int start, int count) { return Task.Run(() =>

## +21 ## Hazard Pointer Synchronous Reclamation Beyond Concurrency TS2 ## MAGED MICHAEL ## Basic Hazard Pointer Algorithm Hazard pointers protect access to objects that may be removed concurrently the user-defined fn is allowed to block or take long time) ## Asynchronous Reclamation • Asynchronous reclamation is invoked when the number of retired objects reaches some threshold: of hazard pointers • No guarantee for the timing of reclamation of individual objects. ## I s Asynchronous Reclamation Always Enough? Example: Removed objects are reclaimed immediately ~Foo() { use_resource_X();

HTTP client that makes it easy to send HTTP requests and trivial to integrate with web services. - Simple interface for building query strings, POST requests, streaming large uploads, streaming large downloads cookies, uploading JSON data, etc... - Can send both synchronous and asynchronous requests using the same interface. - Uses PSR-7 interfaces for requests, responses, and streams. This allows you to utilize ; charset=utf8' echo $res->双语Body(); // {"type":"User..."} // Send an asynchronous request. $request = new \GuzzleHttp\Psr7\Request('GET', 'http://httpbin.org');

## +23 ## Taro: Task graph-based Asynchronous Programming Using C++ Coroutine DIAN-LUN LIN 20 23 October 01 - 06 ## Agenda • Understand the motivation behind Taro • Learn to use the Taro C++ programming Conclusion ## Synchronous/Asynchronous Mechanisms Synchronous Boil the water  Multitasking! Asynchronous Wait ![I presented the motivation behind Taro • We have presented the Taro C++ programming model - Synchronous and Asynchronous mechanisms • We have presented the Taro coroutine-aware scheduling algorithm • We have

send HTTP requests and trivial to integrate with web services. - Manages things like persistent connections, represents query strings as collections, simplifies sending streaming POST requests with fields and files, and abstracts away the underlying HTTP transport layer. - Can send both synchronous and asynchronous requests using the same interface without requiring a dependency on a specific event loop. - Pluggable HTTP handlers allows Guzzle to integrate with any method you choose for sending HTTP requests over the wire (e.g., cURL, sockets, PHP's stream wrapper, non-blocking event loops like React

ROS based application stack: |Simulator mode|ROS application mode|Determinism| |---|---|---| |Synchronous|As fast as possible|Not fully deterministic, the ROS application will be in free running mode and running ROS application that processes the messages as ROS application is running continuously.| |Asynchronous|As fast as possible|Both simulator and ROS application are free running so no determinism will ROS based application stack: |Simulator mode|ROS application mode|Determinism| |---|---|---| |Synchronous|Controlled by ROS bridge using deterministic execution coordinator feature|Fully deterministic

(OpenSource, event etc.); Developer, engineer, lead lost & found || Grab coffee/beer/food; 3. Hedged requests in Go - Oleg Kovalov 4. Afterparty, slowly moving to a place close by ## Join Slido for Q&A

flexible setup. ## 5 What's new in Zabbix 7.0.0 See breaking changes for this version. Asynchronous pollers New poller processes have been added capable of executing multiple checks at the same pollers are asynchronous - they are capable of starting new checks without the need to wait for a response, with concurrency that is configurable up to 1000 concurrent checks. Asynchronous pollers have have been developed because, in comparison, the synchronous poller processes can execute only one check at the same time and most of their time is spent on waiting for the response. Thus the efficiency could

[Image](/uploads/documents/8/f/c/6/8fc6234a5c372637a3df624b1a5fcc6b/p92_1.jpg) ## synchronous single arm control template struct bin_checker_t { using element_type private: Arbiter* checker_; }; github.com/griswaldbrooks/spanny2 ## synchronous single arm control template struct bin_checker_t { using element_type private: Arbiter* checker_; }; github.com/griswaldbrooks/spanny2 ## synchronous single arm control template struct bin_checker_t { using element_type

instructions: https://docs.weblate.org/en/latest/admin/install.html ## Bugs Please report feature requests and problems to: https://github.com/WeblateOrg/weblate/issues ## Live chat Live chat about Weblate files to match POT (msgmerge). ## See also Updating target language files ## Troubleshooting Requests sometimes fail with “too many open files” error This happens sometimes when your Git repository does not have native support for anything other than Git (with extended support for GitHub pull requests, Gerrit and Subversion) and Mercurial, but it is possible to write backends for other VCSes. You