What led us here
Microkernels, eBPF, WebAssembly, LoRa mesh and confidential computing are usually filed as five unrelated hobbies. They are one argument, running for about a decade, about where you put a boundary and what it costs to cross it.
ebpf
The eBPF verifier, and what it refuses
The verifier is the whole story, and you learn more from what it turns down than from what it waves through. A boundary built out of static analysis; you pay at load time and it is free thereafter.
Observability is not three pillars
Metrics, logs and traces is a taxonomy a vendor can invoice against, not an engineering one. The useful question is whether you can answer something you never thought to ask.
The network stopped being fixed-function
SDN, DPDK, XDP and P4 get told as four separate stories. They're one: the moment the network stopped being something you configured and became something you programmed.
