My Expertise:

MySQL

I know how to

• manage servers with 64 cores, 512 GB of RAM and 12 TB of data processing 50k qps
• debug slow queries on TB sized tables
• do downtimeless schema migration of TB sized tables (where the ALTER runs a few days, give or take)
• do downtimeless migrations of TB sized databases across cloud providers
• handle replication and switchover in these circumstances

Linux

• I love to dig at the heart of things
• and find out not only how things work but why they work that way
• As such I’ve accumulated in-depth knowledge in various areas of the Linux kernel
• Not Kernel-Hacker expertise, but enough to help a lot in debugging many a strange issue

Kubernetes

• I find it fascinating how a complex system like a container is built on (relatively) simply primitives like namespaces and cgroups within the Linux kernel
• and how a complex system like K8S is again built on a few simple ideas like reconciliation loops, API objects spawning other API objects and “try until it succeeds”
• Knowing about the intrinsics helps a lot in troubleshooting higher level issues

CNCF projects