A sysadmin guide to the Linux watchdog timer: what the kernel watchdog device actually does, why a hardware watchdog and the softdog module are not the same thing, and five steps to arm it safely, from systemd RuntimeWatchdogSec and per-service WatchdogSec to the userspace watchdog daemon, with the tests that prove it fires before you need it.
Supabase and Appwrite are the default names for a self-hosted backend, and both are heavier than most light projects need. A repo-level review of the alternatives that actually fit: PocketBase, Fluxbase, Spin, and Orva, plus TrailBase and Nhost, with the BaaS versus FaaS distinction, the real use case each one wins, and the limits their own READMEs admit.
The best accounting software for a freelancer is decided by the record, not the receipt: who can read your books, what the entry tier actually unlocks, how cleanly you can export, and what survives a migration. A sysadmin review of QuickBooks Online, Xero, FreshBooks, Wave, Zoho Books, and the self-hosted family (Invoice Ninja, Akaunting, Frappe Books, GnuCash), including what to check before you sign and the one case where self-hosting your books is the right call.
The best email for a law firm is decided by the archive, not the inbox: retention, legal hold, eDiscovery export, audit logs, and the tier that actually unlocks them. A sysadmin review of Microsoft 365, Google Workspace, Proton for Business, Hushmail, Zoho Mail, and the one case where self-hosting is the wrong answer.
Docker and Incus both run containers on the same Linux primitives, but they wrap the kernel mechanism in different abstractions: Docker packages an application, Incus launches a whole operating system. A theoretical comparison of application containers and system containers, the lifecycles each one assumes, and when each unit of management is the right one, with links to our Proxmox vs IncusOS coverage.
Why the 3-2-1 backup rule fails when ransomware and compromised root credentials are the threat: immutable and offline copies, quarterly restore drills, recovery key management, and backing up the configuration that defines your stack. A hands-on sysadmin guide.
After 90 days with self-hosted Immich, the remaining question was what else exists: Ente Photos, the end-to-end encrypted Google Photos alternative that is both a polished cloud service and a fully self-hostable server. A hands-on comparison of Immich, Ente cloud, and Ente self-hosted, with costs, family plans, referral terms, migration, and an honest decision rule.