Technical
Network MTU: diagnose pages that fail for no visible reason
Some pages load on Wi-Fi but not on 4G, or stall after the first MB. Often the culprit is MTU or broken PMTUD — not your application.
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Guide
Scaleway Object Storage: when to move media out of the web server
Images, video and PDFs bloat the web server and complicate backups. Scaleway Object Storage makes sense once media volume or traffic exceeds local disk comfort.
Technical
AAAA records: publish IPv6 without making the site unreachable
Adding an AAAA without checking the full stack can break access for some visitors. Here is how to enable IPv6 without timeouts or blank pages.
Technical
Vulnerable dependencies: handle alerts by actual exposure
A scanner reporting 200 CVEs does not tell you which ones touch your attack surface. Here is how to prioritise fixes by real exposure, not raw scores.
Technical
Content Security Policy: deploy a barrier without breaking the front end
A strict CSP header on Friday night and Stripe checkout vanishes: the XSS barrier only ships via report-only → enforce, with marketing in the loop.
Technical
CORS: fix browser access without opening the API to the world
CORS console error: not the API lock but browser policy — origin whitelist, OPTIONS preflight, and independent auth.
Guide
Getting started on Hetzner Cloud without underestimating administration
Hetzner Cloud offers excellent price-performance — provided you accept firewall, snapshots, updates and no managed support by default.
Technical
Certificate pinning: why a good intention can block a website
After Let's Encrypt renewal, the mobile app may stay offline: pinning on the old key without backup pin blocks the whole fleet.
Technical
Migrating a database: sequence schema, data, and traffic
Midnight cutover without schema/data parity: sequence expand/contract, sync and traffic — clone dry-run before prod window.
Guide
Infomaniak for a French SME: how to judge the offer beyond green messaging
Infomaniak appeals to French SMEs through documented ethics and ecology. But Swiss jurisdiction, no HDS and shared hosting limits require a cold read before migrating.
Technical
rsync: options that prevent a destructive synchronization
A reversed rsync cron wipes prod: trailing slash, --delete, and written SRC→DST direction prevent destructive sync.
Technical
Immutable backups: the safeguard that must also be restorable
Object Lock blocks ransomware on copies — only if you proved restore before trusting immutability.
Technical
Granular restore: recover one customer without rewinding everyone
Restoring the whole VM for one customer erases everyone's timeline: granular restore requires tenant architecture and semiannual drills.
Guide
Should a local authority choose OVHcloud? Questions to ask before procurement
OVHcloud is an obvious candidate for local government — French data centres, HDS, broad catalogue. But the right certified product, public procurement rules and support still need framing before signature.
Technical
Encrypting backups: protect copies as much as production
Prod encrypted at rest, backups land plaintext in a shared bucket: one compromised credential exposes full history.
Technical
S3 presigned URLs: grant temporary access without an expensive proxy
Serving 10 GB user exports through PHP would saturate CPU. Presigned URLs delegate download to storage — with an expiry date you must not forget.
Technical
Object storage lifecycle rules: automate archiving without losing data
The S3 bill doubles quietly: millions of never-read objects sit in Standard tier. Lifecycle rules automate archiving — if you test them.
Technical
IOPS: connect storage promises to perceived slowness
VPS sheet promises NVMe SSD. In prod PostgreSQL checkpoint chokes: 300 sustained IOPS, not 100k marketing burst.
Investigation
Italy: what the hosting market reveals about local SME needs
Italy's hosting market is not a copy of France or Germany. Affordable shared plans, late VPS adoption, AgID compliance — local SMEs mainly want simplicity and clear billing.
Technical
CPU steal on a VPS: identify noisy-neighbor contention
API latency rises with no deploy or traffic spike: `%steal` at 15% in top. Your VPS waits for CPU the hypervisor gives a neighbor.
Technical
Server swap: warning sign, safety net, or bad habit?
Monitoring shows 2 GB swap used permanently: panic or normal? Depends on cold cache vs genuinely missing RAM.
Investigation
Netherlands: does privacy marketing survive the reality of interconnections?
The Netherlands sells hosting as a digital haven. But AMS-IX, submarine cables and data-access laws force you to read network topology — not just a "privacy first" slogan.
Technical
Exhausted inodes: why disk space can look available
df -h shows 40% free yet you cannot create a file: inodes exhausted. Classic after millions of cache or session files.
Technical
Full Linux disk: find the cause before deleting in panic
At 100% disk systemd stops writing logs — and you lose clues about what filled the volume. Diagnose first, delete second.