Beyond 99.99% Uptime: Engineering High Availability Like a Pro

"High Availability is not about avoiding failures; it’s about embracing them intelligently." The industry often touts the 99.99% uptime promise, but real-world HA engineering transcends Service Level Agreements (SLAs). It's about ensuring that even when failures occur, your system remains operational without impacting end-users. Drawing from experiences with large-scale HA architectures, including an active-active setup validating services for 70 million users, one key takeaway emerges: Downtime is not an accident; it’s an oversight. Here’s an in-depth exploration of how real HA operates at scale and how AIOps is redefining availability.

Feb 25, 2025 - 15:07

Beyond 99.99% Uptime: Engineering High Availability Like a Pro

"High Availability is not about avoiding failures; it’s about embracing them intelligently."
The industry often touts the 99.99% uptime promise, but real-world HA engineering transcends Service Level Agreements (SLAs). It's about ensuring that even when failures occur, your system remains operational without impacting end-users.

Drawing from experiences with large-scale HA architectures, including an active-active setup validating services for 70 million users, one key takeaway emerges: Downtime is not an accident; it’s an oversight.

Here’s an in-depth exploration of how real HA operates at scale and how AIOps is redefining availability.