Web TechnologiesCourse and practice

Cheat sheet: Beyond the demo

The 39 terms of this lesson, part by part, with the French word a team in France would use.

Back to the lessonAll terms

1. A demo shows the path where everything goes right

Demodémo
a showing of a tool at work, on a path chosen so that everything goes right.
Happy pathcas nominal
the path through a tool where the user does everything right and nothing fails.
Prototypeprototype
a first working version of a tool, made quickly to try an idea before building it properly.
Edge casecas limite
a difficult value to test a tool with, such as zero, a decimal, a negative number or an empty field.
Access rulesdroits d'accès
rules that decide who can see or change each piece of data, such as each client seeing only their own files.
90-90 rulerègle des 90-90
a programmers' joke that the first 90% of the work takes 90% of the time, and the last 10% takes the other 90%.
AI agentagent d'IA
a program that reads and writes a project's files and runs commands, following your requests in a chat.

2. Who uses it, and what is at stake

Pilotpilote, phase pilote
a first period when a small group of real users tries a tool, before everyone gets it.
Internal tooloutil interne
an app built only for a company's own staff, such as a dashboard or a booking tool for the team.
Security reviewaudit de sécurité
a check by a specialist who looks for ways an attacker could reach accounts or data.
GDPRRGPD
the European law on personal data, which applies as soon as a site collects a name or an email.
App store reviewvalidation sur les stores
the check that Apple and Google make on each new version of an app before it appears in their stores.
Prototypeprototype
a first working version of a tool, made quickly to try an idea before building it properly.

3. An estimate is a guess

Estimateestimation
an approximate price or duration, given early, which can still change.
Unknowninconnue
a part of the work that nobody understands yet, such as another company's system, which makes an estimate uncertain.
Investigationétude préalable, spike
a short piece of work, often a few days, to clear the biggest unknown before estimating the rest.
Documentationdocumentation
the written guide to a system or a service, which explains how other software can connect to it.
Rangefourchette
a low and a high figure, such as €3,000 to €6,000, given instead of one exact number.

4. A date is a promise

Estimateestimation
an approximate price or duration, given early, which can still change.
Rangefourchette
a low and a high figure, such as €3,000 to €6,000, given instead of one exact number.
Deadlineéchéance
the date when the work must be finished or the site must be online.
Scopepérimètre
everything a version of the project includes, written down so that everyone agrees on it.
Hofstadter's lawloi de Hofstadter
the rule that work always takes longer than you expect, even when you take this rule into account.

5. How much reliability to buy

Availabilitydisponibilité
the share of the time that a site works, such as 99.9%, which still allows about 9 hours offline a year.
Downtimeindisponibilité
the time during which a site doesn't work for its visitors.
SLASLA, engagement de service
a provider's written promise about availability and response times, which says what it pays if it fails.
Service creditavoir
a small refund that a provider gives when it breaks its promise, usually much less than your lost sales.
On callastreinte
being ready to answer and fix problems outside working hours, such as at night.
Peakpic d'activité
the short period when a site has many more visitors or sales than usual, such as the weeks before Christmas.
Load testtest de charge
a test that sends the traffic of many visitors to a site at once, to check that it holds before a busy day.
Code freezegel des mises en production
a period, such as December for a shop, when nobody puts new changes online.
Virtual queuefile d'attente virtuelle
a waiting page that lets visitors into a busy site a few at a time, as for concert tickets.
Uptime monitoringmonitoring, supervision
a service that checks a site every few minutes and alerts you when it stops answering.

6. What to ask

Demodémo
a showing of a tool at work, on a path chosen so that everything goes right.
Pilotpilote, phase pilote
a first period when a small group of real users tries a tool, before everyone gets it.
Rangefourchette
a low and a high figure, such as €3,000 to €6,000, given instead of one exact number.
Unknowninconnue
a part of the work that nobody understands yet, such as another company's system, which makes an estimate uncertain.
Availabilitydisponibilité
the share of the time that a site works, such as 99.9%, which still allows about 9 hours offline a year.
Service creditavoir
a small refund that a provider gives when it breaks its promise, usually much less than your lost sales.

Web Technologies · Orders of magnitude · wt.thomasjuldo.com/course/orders-of-magnitude/beyond-the-demo