Four ASEAN countries have no time zone of their own
Asia/Phnom_Penh, Asia/Vientiane, Asia/Kuala_Lumpur and Asia/Brunei are not time zones. They are links, and the files beh...
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Developer Tools guides
Step-by-step how-tos, head-to-head comparisons and honest roundups — every guide worked through with current figures, then backed by a RECATOOLS calculator or AI-directory entry so you can act on it.
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Latest guide Sep 2026
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One cron line, three different answers
Ask three tools how often 0 0 */2 * 1 runs in September 2026 and you get two firings, seventeen, or four. Cron switches...
MCP deleted the handshake every tutorial teaches
The Model Context Protocol revision of 28 July 2026 removed the initialize handshake, the session header and the server'...
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How to Self-Host Home Assistant with Docker
Running the container instead of a supervised install gives up the add-on store, which is a real trade. And bridge netwo...
How to Self-Host Gitea or Forgejo with Docker
The environment variable that closes public registration was renamed, so copying an older tutorial leaves your git host...
How to Self-Host Nextcloud with Docker
The first decision is not a setting: there are two official deployment routes and they are not variations on each other....
Why fancy text breaks search and screen readers
The bold and script letters people put in bios are not a font. They are mathematical notation, and the standard that def...
How to Back Up a Docker Stack
Every self-hosting guide ends by telling you to back it up and none of them say how. Three things live in different plac...
How to Set Up Caddy as a Reverse Proxy with Docker
Caddy gets certificates without being asked, which is why it is the right first reverse proxy. The confusion starts with...
How to Self-Host Immich with Docker
Serving photographs is easy. Recognising the faces in them is what decides whether the installation is comfortable or mi...
How to Self-Host Jellyfin with Docker
The decisions that are awkward to undo are all made in the first ten minutes: mount media read-only, choose paths you ca...
How to Self-Host Paperless-ngx with Docker
Three of its requirements are about the host rather than the application. The user IDs have to match or nothing gets con...
How to Self-Host Uptime Kuma with Docker
Two things break this after it is working. Its data directory cannot live on NFS, and behind a reverse proxy without Web...
How to Self-Host Vaultwarden with Docker
The compose file is trivial. The admin token is not: it wants an Argon2 hash rather than a password, and the hash then b...
What Your Monitoring Costs the Database
Metadata queries are expensive because the server assembles the answer by walking itself. Measured on production with th...
How to Find What Is Scanning Your Tables
Knowing a table is scanned tells you little; knowing which statement scans it tells you everything. Reading MySQL's stat...
Sixty Percent of Your Reads Use No Index
A database either uses an index to find rows or scans the table, and on a small table the scan is the right choice. Meas...
The Indexes Nobody Reads
Indexes accumulate because nothing ever removes them, and removing one means proving it is unused. MySQL will tell you:...
Your Scheduler Has Never Reported a Failure
Fifty-nine thousand runs, forty-four commands, zero failures — because for background tasks the failure path ran in a pr...
Your Daily Report Is Counting the Wrong Day
A naive date filter and a timezone-aware one disagreed on twelve of twenty-one days, once reporting six items on a day t...
How to Behave When You Are Rate Limited
Five clients, one job, one throttle. Hammering issued 553 requests to fetch 40 things and finished behind the client tha...
What Your Rate Limit Actually Limits
A route limited to 30 a minute and one limited to 60 turned out to share a single counter, because the framework keys it...
How to Write an MCP Server Without a Framework
MCP is JSON-RPC over a pipe. Sixty-two lines of dependency-free code, driven directly with the protocol — the handshake,...
Where a ComfyUI Node Keeps Its Licence
The registry names a licence for only 15.5% of nodes and puts a bare filename in the field for 59.1% more. We opened 60...
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