TLS certificate expiry: the outage that never had to happen
Expired certificates cause outages that never had to happen. How TLS expiry monitoring works, and what to set as the warning threshold.
Writing about uptime
Practical notes on monitoring, certificates and the outages that are cheaper to prevent than to explain.
What an hour of downtime actually costs a Kenyan business
What an hour of downtime costs a Kenyan business: lost revenue, failed M-Pesa checkouts, support load and reputation — and how to measure it.
Monitoring an ISP link: what to measure beyond ping
Ping alone calls a broken link healthy. A guide for Kenyan ISPs: port, HTTP and TLS checks, latency baselines, and alerting on state change.
Email, SMS or WhatsApp: choosing an alert channel in Kenya
Which alert channel reaches an on-call engineer in Kenya: cost, latency and failure modes of email, SMS, WhatsApp and Slack.