Pratique du Shadowing: CI/CD Explained in 5 Minutes - Apprendre l'anglais à l'oral avec la vidéo

Création de la leçon...
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Give me five minutes and I'll show you how code gets from a laptop to production environment for millions of users.
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A developer writes some code on their laptop.
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A few hours later, that exact code is running for millions of people around the world.
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And imagine a human barely touched it along the way.
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Let me show you that journey because it is one of the most satisfying things in all of engineering.
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Now let's start with the old way.
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So the modern one makes sense immediately.
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A developer finishes their code, copies the files onto the live server by hand, restarts it, and hopes nothing breaks.
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If something is wrong, the website goes down and everyone panics to fix it under pressure.
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It's slow, it's stressful, risky, and it's easy to make mistakes that takes the whole site offline.
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The modern way, the exact opposite of this,
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uses a pipeline to replace the old do it manually and hope for the best way.
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So think of a pipeline like an assembly line for code.
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And let's walk through the stations of that assembly line one by one.
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Step one, developer pushes their code to a shared place like GitHub and pushing that code is the only manual step.
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Everything after this is automatic.
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Step two, that push automatically triggers tests.
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So the pipeline runs hundreds of checks.
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Does the new code work?
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Did it break something that used to work before?
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If any test fails, the code changes are rejected right away before it ever gets near a real user.
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So this is your safety net.
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Step three, if the tests pass, the code is packaged into a container image.
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That sealed box with the application and everything application needs packaged inside of it.
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So it runs the same way no matter where it lands.
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Step four, the package is sent first to a staging environment.
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So staging is a copy of the real environment,
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like a simulation basically, where where the team can see exactly how the application changes will behave on real environment.
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Your actual users never see staging.
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This is for testing or preparing for the actual environment.
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Step five, if tests on staging environments look good, the package then goes to production,
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which is the real environment your users actually see.
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Now, obviously there is already a previous version of the application running on production.
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So the old version needs to be stopped and the new version deployed.
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But here's an interesting point.
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Smart teams do not just flip to the new version for everyone at once.
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They release it to 10% of users first.
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So 90% of users still get the old version.
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Only 10% see the new one.
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Why?
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Because you can't possibly test everything before, no matter how careful you are and how many stages you have before.
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So if something still slipped through the tests, and if anything breaks, only 10% of users will be affected,
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not 100% of them.
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And you can roll it back immediately to the previous version.
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So this allows teams to observe the new version carefully, maybe for a few hours.
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If everything looks fine, then roll it out to everyone else.
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Now the names.
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This whole assembly line is called CI-CD.
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CI is the automatic testing every time the code changes.
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CD is the automatic delivery of of those code changes to the users.
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And together they turn a scary manual all-hands event into this repeatable boring process.
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And boring is exactly what you want when millions of people use your app actively.
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You want predictable outcomes without any surprises.
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So the journey is push, test, package, staging, production.
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Happening automatically many times a day with a safety net at every step with automated tests
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and an undo button at the end.
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Building that pipeline is actually a huge part of what DevOps engineers do
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and it is the reason companies can ship updates constantly without causing a mess for their entire set of users.
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Vocabulaire et conseils d’expression pour cette leçon

Cette vidéo contient 58 phrases et 668 mots à répéter en shadowing. La partie parlée dure 4:52. Le locuteur parle à un rythme régulier d’environ 137 mots par minute, confortable pour le shadowing. 85 % des mots font partie des 3 000 mots les plus courants en anglais ; le reste mérite d’être vu avant de commencer.

Vocabulaire clé de cette vidéo

15 mots de la vidéo à retenir, avec leur prononciation et leur sens :

MotPrononciationSens
package nom/ˈpæk.ɪd͡ʒ/paquet, paquetage
pipeline nom/ˈpaɪpˌlaɪn/pipeline
automatic adjectif/ˌɔː.təˈmæt.ɪk/automatique
developer nom/dɪˈvɛləpɚ/concepteur, développeur
manual nom/ˈmæn.j(u)əl/manuel
laptop nom/ˈlæp.tɑp/ordinateur portable, portable
bore verbe/boɹ/ennuyer, barber
carefully adverbe/ˈkɛɹf(ə)li/soigneusement
server nom/ˈsɝvɚ/serveur
scary adjectif/ˈskɛə.ɹi/sinistre, terrifiant
seal nom/siːl/sceau, cachet
slip verbe/ˈslɪp/glisser
panic nom/ˈpænɪk/panique
trigger nom/ˈtɹɪɡɚ/détente, gâchette
actively adverbe/ˈæktɪvli/activement

Les verbes à particule que vous entendrez

MotSens
go down verbedescendre

Prononciation à surveiller

  • Mots longs — placez bien l’accent: automatic /ˌɔː.təˈmæt.ɪk/, developer /dɪˈvɛləpɚ/, predictable /pɹəˈdɪktəbləl/, manually /ˈmænj(u)əliː/, repeatable /ɹɪˈpiːtəbəl/

Comment s’entraîner avec cette vidéo

  1. Écoutez la vidéo en entier une fois sans parler et notez les mots que vous ne connaissez pas.
  2. Répétez phrase par phrase à vitesse normale, en reprenant chacune jusqu’à ce que votre rythme corresponde à celui du locuteur.
  3. Enregistrez-vous et comparez avec l’original, en faisant attention à des mots comme package, pipeline, automatic.

Qu'est-ce que la technique du Shadowing ?

Le Shadowing est une technique d'apprentissage des langues fondée sur la science, développée à l'origine pour la formation des interprètes professionnels. Le principe est simple mais puissant : vous écoutez de l'anglais natif et le répétez immédiatement à voix haute — comme une ombre suivant le locuteur avec un décalage de 1 à 2 secondes. Les recherches montrent une amélioration significative de la précision de la prononciation, de l'intonation, du rythme, des liaisons, de la compréhension orale et de la fluidité.

Technique du shadowing : lire le guide complet étape par étape →