Tristan BessoussaFrançais

Tristan Bessoussa, CTO: infrastructure, Symfony, serverless and AI, measured

Tristan Bessoussa, CTO. Configs, benchmarks and numbers from real projects.

CTO · writing here since 2014

Tristan Bessoussa

I lead engineering teams and write about infrastructure, Symfony, serverless and AI. Here: configs, benchmarks and numbers from real projects.

Latest article · October 13, 2026

The day my agents repainted my GitHub year.

My time with the agents nearly doubled, from 5 to over 9 hours a day, and my project switches went up 6.6×, in step with the commits.

×6.6my daily project switches since my agents started committing, with ×1.8 time spent with them

Data · 2011–2026

From Symfony to agentic coding: 15 years on X

A CV is declared. Fifteen years of likes, retweets and tweets are measured: 19,367 public traces of what held my attention, across 14 topics, from PHP to infrastructure to AI agents.

0.2% → 51%AI’s share of what I read and write on X, 2022 to 2025

See the charts →

  1. Five sites in production for a joke, in under a day.

    When building costs so little, I dare to try ideas I would have dropped before writing a line of code.

    1h30of my time for six projects, from idea to going online

    AI · October 8, 2026 · 9 min read

  2. How I Used AI to Hack My CrossFit Waitlist Problem (and Why It Changed My View on AI Development)

    My success rate for getting into cancelled CrossFit slots jumped from 20% to 100%.

    20% → 100%cancelled slots secured

    AI · November 28, 2024 · 4 min read

The whole archive 25 articles, 2014–2026

YearTitleMeasureMin
2026The day my agents repainted my GitHub year. 2026 · AI×6.6my daily project switches since my agents started committing, with ×1.8 time spent with them5
The apple tree and the basket. 2026 · AI13 mincalculated average block on the lightest meeting days, vs 81 min in 202510
Five sites in production for a joke, in under a day. 2026 · AI1h30of my time for six projects, from idea to going online9
2024How I Used AI to Hack My CrossFit Waitlist Problem (and Why It Changed My View on AI Development) 2024 · AI20% → 100%cancelled slots secured4
20215 yearsA healthy development environment in 2021: hello Docker, goodbye virtual machines 2021 · Dev tools7
Test-driving Hidora, a Swiss PaaS 2021 · Infra · 6/72,048 msaverage response time, vs 492 ms at Scalingo5
20206 yearsHow Serverless Saved Us For $2. 2020 · Infra2 min2,000 PDFs generated, instead of 11 h6
20197 yearsHow not to be depressed when working with WordPress 2019 · PHP/Symfony−40%page generation time16
Series · Comparing PaaS offerings
PaaS benchmark: Clever Cloud vs Scalingo vs Hidora 2019 · Infra · 7/7492 msScalingo at €10.8/month3
French PaaS providers are in a boat: Platform.sh lies at anchor 2019 · Infra · 5/7€40for 0.8 GB of memory3
French PaaS providers are in a boat: Scalingo stays afloat 2019 · Infra · 4/74
French PaaS providers are in a boat: Clever Cloud rights the ship 2019 · Infra · 3/7+€54/yrprice gap with Scalingo6
French PaaS providers are in a boat: OVH falls overboard 2019 · Infra · 2/713 daysuntil the first support reply4
OVH, Clever Cloud, Platform.sh and Scalingo are in a boat: comparing French PaaS providers 2019 · Infra · 1/74 PaaScompared2
20179 yearsGetting ALPN negotiation on Debian 9 (stretch) to activate HTTP2 with nginx 2017 · Infra1
201610 yearsSeries · An application migration strategy
Taking stock of our migration 2016 · PHP/Symfony · 3/32 yearsof migration5
A closer look at continuous migration 2016 · PHP/Symfony · 2/332 / daydeployments at peak4
Why we migrated our application 2016 · PHP/Symfony · 1/370%of forms on obsolete code4
201511 yearsThe PR Review Watcher, save time when reviewing code 2015 · Dev tools2
Introducing the pull request builder 2015 · Dev tools20 minto get a test environment per PR2
201412 yearsAnsible: from provisioning to application deployment 2014 · Infra1
The impact of the migration: performance doubled 2014 · Infra÷2response time, 1 s → 300–400 ms2
Apache vs Nginx / php5-fpm: making an application respond 2x faster 2014 · Infra4
MySQL vs MariaDB: making an application respond 2x faster 2014 · Infra4
OVH IP Load Balancing: beware the multi-datacenter option 2014 · Infra3