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+<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><title>Async: Avoiding disaster and unbounded growth</title><meta content="yes" name="apple-mobile-web-app-capable"><meta content="black-translucent" name="apple-mobile-web-app-status-bar-style"><meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui" name="viewport"><link href="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.7.0/css/reveal.css" rel="stylesheet"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.7.0/css/theme/simple.css" id="theme"><!--This CSS is generated by the Asciidoctor-Reveal.js converter to further integrate AsciiDoc's existing semantic with Reveal.js--><style type="text/css">.reveal div.right {
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+.conum:not([data-value]):empty{display:none}</style><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.0-1/css/all.min.css"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.0-1/css/v4-shims.min.css"><script>var link = document.createElement( 'link' );
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+document.getElementsByTagName( 'head' )[0].appendChild( link );</script><!--[if lt IE 9]><script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.7.0/lib/js/html5shiv.js"></script><![endif]--><link rel="stylesheet" href="slides.css"></head><body><div class="reveal"><div class="slides"><section class="title" data-state="title"><h1>Async</h1><h2>Avoiding disaster and unbounded growth</h2><div class="preamble"><div class="paragraph"><p><a href="./index.html">Table of Contents</a></p></div></div></section>
+<section id="_information_gathering"><h2>Information gathering</h2><div class="paragraph"><p>Your project is dynamic:
+* Make it traceable
+* Constantly monitor</p></div></section>
+<section id="_backpressure"><h2>Backpressure</h2><div class="paragraph"><p>Backpressure is the process of "pushing back" on producers that are to fast.</p></div>
+<div class="paragraph"><p>This throttles the system, but allows it to not fail.</p></div></section>
+<section id="_bounded_vs_unbounded_growth"><h2>Bounded vs. unbounded growth</h2><div class="ulist"><ul><li><p>bounded channels are predictable</p></li><li><p>unbounded are more dynamic</p></li><li><p>bounded provide backpressure</p></li><li><p>unbounded are useful if you know they are never beyond a certain size</p></li></ul></div></section>
+<section id="_holding_state"><h2>Holding state</h2><div class="ulist"><ul><li><p>Tasks can hold state (erlang pattern)</p></li><li><p>Otherwise, Mutexes and RWlocks allow sharing</p></li></ul></div></section>
+<section id="_dropping_futures"><h2>Dropping futures</h2><div class="ulist"><ul><li><p>Droping a futures means cancelling it</p></li><li><p>Be aware on what happens if is cancelled</p></li></ul></div></section>
+<section id="_shutting_down"><h2>Shutting down</h2><div class="ulist"><ul><li><p>Make sure you handle signals centrally</p></li><li><p>Every component should subscribe to a cancel notification</p></li></ul></div></section>
+<section id="_implementing_a_custom_future_pinning"><h2>Implementing a custom Future: Pinning</h2><div class="ulist"><ul><li><p>Futures are not allowed to move in Memory</p></li><li><p>The type that discribes that is called <code>Pin</code></p></li><li><p>Pinning is hard, but there&#8217;s support libraries</p></li></ul></div></section>
+<section id="_the_poll_protocol"><h2>The poll protocol</h2><div class="paragraph"><p>Futures are <code>poll</code> based - that means they get asked if they are complete.</p></div>
+<div class="ulist"><ul><li><p>This happens an infinite number of times, until they mark themselves complete</p></li><li><p>The process is optimised through the <code>Waker</code> type</p></li><li><p>Implemeting poll yourself is rather easy</p></li></ul></div></section></div></div><script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.7.0/lib/js/head.min.js"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/reveal.js/3.7.0/js/reveal.js"></script><script>Array.prototype.slice.call(document.querySelectorAll('.slides section')).forEach(function(slide) {
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