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TypeScript for backend services
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EngineeringAdvanced
HTTP, and what a framework hides
Send requests by hand until caching, cookies and redirects hold no surprises.
Rated 4.51,180 reviews12,300 learners
Taught by Kofi Mensah, verified instructorPlatform engineer · streaming · Rowan Engineering- Length
- 6 weeks at 5 hours a weekAt your own pace, or in a live cohort
- Credential
- Earn a course certificateIssued by Rowan Engineering
- Language
- Taught in EnglishWith subtitles in 9 languages
- Tutor
- An AI tutor in every lessonIt answers from the lesson on screen
$79once, yours to keep
Or in Waypoint Plus for $29 a month
Enroll for $79Start lesson one freeYour money back within 30 days
Start
About this course
Every experiment runs from a terminal on your own laptop, with curl and a socket and nothing between you and the server. It suits developers who have shipped web apps for years without reading a raw response.
Skills you practice
Syllabus
5 modules
Ends on the project
16 lessons
7 to 15 min each
2 h 51 min of video
Pause to ask the tutor
2 free lessons
Watch before you pay
4 quizzes
25 questions in all
1 project
Reviewed by Kofi's team
- 1.2Talking to a server over a raw socket9 min
- 1.3Status codes a framework papers over12 min
- Quiz · 8 questions10 min
- 2.2ETags and conditional requests15 min
- 2.3What a CDN keeps, and for how long8 min
- 2.4Purging a cache without a stampede9 min
- Quiz · 7 questions10 min
- 3.1The Set-Cookie attributes that matter13 min
- 3.2SameSite and the forgery it prevents9 min
- 3.3Sessions and tokens, and where each one lives10 min
- Quiz · 5 questions9 min
- 4.1301, 302, 307 and 30813 min
- 4.2Content negotiation and compression13 min
- 4.3Range requests and resumable downloads7 min
- Quiz · 5 questions6 min
- 5.1Keep-alive and connection pools15 min
- 5.2HTTP/2 and one connection for everything10 min
- 5.3What a TLS handshake costs7 min
- Project · Write an HTTP server from sockets and pass a test suite4 hours
What the price covers
In the price
- 16 video lessons, 2 h 51 min in all
- The AI tutor beside every lesson
- 4 quizzes, graded as you answer
- A project reviewed by Kofi's team
- A course certificate when you finish
- Transcripts in 9 languages
Not in it
- Answers the tutor writes for you
- Live reviews outside a cohort
- One-to-one mentoring
- A job guarantee
Your instructor
Kofi Mensah, verified instructor
Platform engineer · streaming
- Rating
- 4.5
- Learners
- 31.3K
- Courses
- 3
12 years in platform engineering
I run the platform team at a video streaming service.
Career highlight
We cut our cloud bill by a third in one year.
How Kofi teaches
I teach the layers under the frameworks.
Reviews, rated4.51,180 reviews
Overall rating
- 5 stars, 66% of reviews
- 4 stars, 24% of reviews
- 3 stars, 6% of reviews
- 2 stars, 2% of reviews
- 1 star, 1% of reviews
Yusuf K.Junior developer
4 weeks agoFinished
The tutor asked what I thought the error meant before saying anything. Annoying on day one; by week three I was doing it unasked.
Grace W.Career changer
4 months agoFinished
I finished with a repository I could show in interviews. Two interviewers asked about the project before they asked about anything else on my résumé, and one of them had read the tests. I had spent eight years in retail management, and this was the first thing I had ever built that a stranger could download, install and run on their own machine.
Diego F.Backend developer
2 weeks agoFinished
The exercises break things on purpose. Fixing the failing run in module three taught me more than any of the lectures I have sat through.
Pete L.Senior engineer
2 months agoFinished
Too basic for me. The last module is what I came for, and it is short.
Mei C.Software engineer
1 month agoFinished
Kofi reviews the project the way a senior colleague would: short comments, each pointing at one line of your code and asking why it is there.
Nadia B.DevOps engineer
2 months agoFinished
I use something from this course every week. The notes on failure paid for it.
6 of 1,180 reviews
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Enrolling
What people ask before they enroll
A person answers anything this list does not. Ask us.
That you already do this work day to day. The course spends no time on the basics, and its first module starts where most introductions to the subject leave off, at the part that is hard to learn alone.
Nothing expires. 6 weeks at 5 hours a week is the pace the course was planned at, and at 3 hours it takes 10 weeks. The panel above works out a finish date for whatever pace you give it.
A start date, a finish date and a live review of the week's work every Thursday, with the same 30 people from the first week to the last. The lessons and the tutor are the ones the self-paced track gets.
A certificate from the school that made the course, and the project the instructor's team reviewed. Each comes with a link that anyone, an employer included, can open and check in a few seconds.
Yes, within 30 days of enrolling, from your account page and with no form to fill in or reason to give. Lesson one is free with the tutor, so most people know the course suits them before they pay.
Waypoint Plus is $29 a month and opens this course along with every other. At $79 this one costs about 3 months of it, so buy it on its own if it is the only course you mean to take this year.
Watch lesson one tonight. Decide in the morning.
It opens with the tutor beside it and the practice set under it, and asks for no card. The other 15 lessons are $79 once, or part of Plus.
Your money back within 30 days.
