Teiva Harsanyi
@teivah
Followers
5,078
Following
181
Media
162
Statuses
3,514
💻 Software engineer @Google 📖 100 Go Mistakes author , blog at ❤️ Go, Distributed Systems & Reliability, 改善
Paris
Joined January 2010
Don't wanna be here?
Send us removal request.
Explore trending content on Musk Viewer
Netanyahu
• 2110680 Tweets
Hamas
• 475505 Tweets
Deadpool
• 199462 Tweets
River
• 188222 Tweets
#สุขสันต์วันเกิดนะนุนิว
• 143102 Tweets
Flamengo
• 126107 Tweets
NuNew 23rd Birthday
• 125358 Tweets
Deport
• 105102 Tweets
Demichelis
• 66684 Tweets
مشاري
• 59187 Tweets
Angela
• 56631 Tweets
Vitória
• 52700 Tweets
#AEWDynamite
• 44656 Tweets
Mets
• 40636 Tweets
Yankees
• 39156 Tweets
Carlinhos
• 34682 Tweets
Jasper
• 31403 Tweets
プロモーション
• 26559 Tweets
Allan
• 25840 Tweets
Gabigol
• 25328 Tweets
#WeLoveYouBambam
• 16628 Tweets
Luciano
• 16345 Tweets
Arrascaeta
• 14877 Tweets
Rony
• 13915 Tweets
#AEWBLOODandGUTS
• 13073 Tweets
Arias
• 12545 Tweets
Smile On Innocent Face
• 10286 Tweets
Pinned Tweet
My book, 📖 100 Go Mistakes and How to Avoid Them, has finally been released 🎉
#golang
It took me almost 3 years of work since I first thought about the concept and I'm delighted it finally came out. Thanks to
@ManningBooks
and all the people involved 🙏
26
127
607
Facebook uses the concept of adaptative LIFO for queues:
- They use FIFO order under normal conditions
- They switch over to LIFO order under high load
The rationale? By keeping FIFO order under high load, users may have already abandoned their request.
Therefore, processing
22
170
1K
I wrote a book on Go and I didn't even know we could use switch without condition 🫣
25
42
531
Challenging algorithms and data structures every programmer should try
3
111
486
🧵 My top 10 list of the IT books that helped me the most during my career.
5
117
485
I've just added a bunch of improvements to
#golang
.
I'll keep adding more and more content in the future. Happy to see that people learn from it without having to pay for the book.
3
60
210
I want to create a web version of that would be synchronized with the GitHub content. Any ideas about which platform I could use? I really want to spend a minimal amount of time :)
9
54
200
I've completed the first final draft of my book 100 Go Mistakes.
I've also published a repo containing all the source code for anyone interested:
#golang
1
31
183
Thanks for copying all the content of my book into a talk, including some code snippets.
Of course, the minimum could have been to reference my book but well... 🤷
@conf42com
🎉 Don't miss "Common Mistakes in
#Golang
and How to Avoid Them" at
#Conf42
!
🌐
#Golang
#ProgrammingMistakes
#BestPractices
#TechConference
#Conf42Golang
#DeveloperCommunity
#SoftwareEngineering
#CodeQuality
#DebuggingTips
#LearningAndDevelopment
#Tech
2
1
5
7
12
160
Got my first Go PR accepted 🥳 Not a big one, but it still feels good nonetheless.
11
5
157
A wonderful resource that describes some anti-patterns that increase the cognitive load for developers 🧠
The best one I read so far
Cognitive Load Developer's Handbook
1
23
105
An attempt: I opened sponsorships on
#golang
If your company is hiring and you want to let Go developers know about it, you can sponsor the repo (audience: +1.2k every 2w).
Let's give it a try; if that doesn't work out, I'll remove it 😄
1
15
69
0
14
62
❌ Can you spot what's *wrong* with this worker pool implementation in Go?
#golang
#concurrency
13
14
57
Yesterday was my last day
@Docker
🐳.
I had a fantastic experience. Sure, the company and the products are great, but, imo, the company's main asset is its people - skilled, open, and, more importantly, humble. One of the rare times I've seen a company's virtue applied tangibly.
6
1
56
#4
On , that's pretty cool.
Of course, this is because of
@ThePrimeagen
's react . Thank you for that 🙏.
5
4
48
I rarely tweet about my book, 100 Go Mistakes. Indeed, I'm afraid to look boring to my followers if I keep promoting my own content. Yet, this is the end of the year, so let's do it for once.
Reviews
First, I'm thrilled with how well it was received by the Go community. Looking
6
2
44
Interestingly enough, only 11% got it right.
When you see a defer, you should know that only the latest set of parenthesis is executed as a deferred expression; the rest is executed immediately.
- In this example:
defer s.add(1).add(2).add(3)
add(1) and add(2) are executed
3
2
41
I'm looking for new ways to help engineers, and I was wondering if some people here would be interested in the form of a free & long-term mentorship.
It wouldn't be to "format" people the same way I work but more to help (juniors or mid-level) in different areas such as...
12
9
37
I've made this diagram to help me in having an accurate mental model of the virtual memory concept. Remarks are welcome.
0
3
35
In Go, runtime.LockOSThread() to reduce the number of cache misses in some very specific conditions
Last thought before to go to sleep
3
2
32
I started working on Gossip Glomers:
I find it... absolutely fantastic!
For example, in challenge 3, we have to build a broadcast protocol with some constraints in terms of latency and the number of messages exchanged. It's really challenging and fun!
0
5
31
0
6
30
I completed the Gossip Glomers challenge ().
Here's my repo where I explain the solutions I took:
Frankly, it was a great experience. Thanks
@flydotio
🙇🏻♂️
3
2
31
If you're interested, my book 100 Go Mistakes (alongside other Go books) is part of Manning's deal of the day:
3
7
29
Looking forward to this book:
0
1
29
If your public API takes a string as a parameter, you should be prepared to receive the integral of Shakspeare translated into 52 languages.
Said differently, when you expose something, you should be prepared for users to try your API in unexpected ways (purposely or not).
1
8
29
First time I really experienced the need of coroutines in Go.
7
0
28
Reminder: no one is obliged to do some extra personal stuff (e.g., open-source projects, watching conferences, reading tech books) outside work. Don't feel bad if you go through periods like that.
What matters, in the end, is managing your own energy.
0
4
26
From slow to SIMD: A Go optimization story
1
4
28
I'm delighted to share that we've sold over 5,000 physical copies of my book!
While my main goal was to create some good content (not to reach some target), seeing so many readers finding value in it is truly amazing.
Thank you very much 🙏.
My book, 📖 100 Go Mistakes and How to Avoid Them, has finally been released 🎉
#golang
It took me almost 3 years of work since I first thought about the concept and I'm delighted it finally came out. Thanks to
@ManningBooks
and all the people involved 🙏
26
127
607
3
1
28
I can read here and there so much confusion on TDD. For example, some people state that TDD allows one to get full confidence in some code. I strongly disagree with that.
Practicing TDD leads to a significant code coverage, true. Yet, I can practice TDD but write tests that
7
1
24
Glad to announce that I signed with
@ManningBooks
to write a book about Go 🥳 More coming soon.
4
2
23
What We Got Right, What We Got Wrong
Rob Pike's retrospective on 14 years of Go.
0
12
23
I'm starting to think about writing a blog post that would try demystifying non-straightforward database concepts like serializability, linearizability, etc. 🤔
1
1
23
Truth be told, I'm tired of having to implement my own function in Go to return the max between two ints 😒
3
1
23
A book is never finished; it's abandoned ― Gene Fowler
After almost 2 years of writing, I've just abandoned my book.
Release date: end of August for the print version and beginning of October for the electronic version.
#golang
1
6
22
I recently got a very nice comment on my book. Yet, after reading it carefully...
2
1
22
I don't want to sound picky couldn't an editor be consistent across the books it publishes regarding the name of a language?
6
0
21
Do you want to delete elements while iterating on a slice in
#golang
?
Here's a trick I learned today from
@val_deleplace
. I still can't decide whether I love it or I hate it 😂
2
2
21
Look at the picture I just got from
@goinggodotnet
.
How cool is the fact that he printed the inside cover of my book? 😁
#proud
2
2
20
Great post
I also experience this e2e tests hell. I like the approach they chose 👌.
1
5
18
It was genuinely inspiring meeting
@BhosalePratim
. She is passionate, curious, and likes sharing her knowledge with others. People like her drive our industry forward.
Thanks for the visit; see you next time!
Google Office in Paris is exquisite ✨🥐
Yesterday I had lunch with
@teivah
and I asked him how in his 12+ years of workX with leading Tech companies, freelancing and being an established author he learnt new concepts.
And this is what he had to say
11
13
598
1
0
19
🧵 10 things I learned about technical writing and teaching in general while writing my first book.
2
1
18
I just remembered the time when, in a previous company, I managed to push to production a service that was logging my face at startup. How cool is that?
2
1
16
4. Understanding Distributed Systems by
@RaVitillo
#distributedsystems
In my opinion, the first book to read when starting to study distributed systems. It provides an outstanding entry point on many crucial topics, even for experienced engineers.
1
2
18
Coming with Go 1.21
🎉
You have to use a function that returns the max value between two ints in Go; how do you handle it?
1
1
4
4
1
18
One handy pattern I discovered today in
#Golang
when we want to make sure our function receives a string literal (i.e., string constant).
For example, to prevent SQL injection, we want to make sure the client uses SQL binding instead of `fmt.Sprintf("select ... where clientID =
3
1
18
New language in town
2
2
16
I'm seriously getting exhausted with
@GoLandIDE
... Having a feature as simple as a Ctrl+Z that doesn't work from time to time, it's really depressing.
I think it's time to start migrating to VSCode...
13
0
16
[New Blog Post] I Completed All 8 Advents of Code in One Go: Here Are the Lessons I Learned 🚀
#AdventOfCode
1
4
14
For the context, here's the original version. If you look closely, there might be references to the folks who inspired me the most in the Go community.
1
2
15
With the Scala Kafka Streams wrapper made by
@lightbend
included! 😁
🎆What a nice start to the week: Apache Kafka 2.0 has been released 🎇
Check out the release notes here:
Stay tuned for Confluent Platform 5.0…
2
63
92
0
3
15
5. Designing Data-Intensive Applications by
@martinkl
#distributedsystems
No IT top list without this one. Pure gold. Perhaps more in-depth than the previous one so I think these two books complement each other perfectly well.
1
1
15
When it comes to choosing a DB, there are tradeoffs we have to make:
- Latency vs. consistency
- Availability vs. consistency
- ACID vs. non-ACID
- Read vs. write heavy
Here's a framework that one could use during system design interviews.
0
5
15
Concurrency isn’t Always Faster in Go
3
2
15