Sre Blogs

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Ivan Velichko
1/12/2026 EN

Ivan Velichko

Ivan Velichko — Experienced software engineer and educator focused on server-side, infrastructure, and Cloud Native technologies, known for making complex systems approachable through clear explanations and hands-on learning.

Brendan Gregg
11/2/2025 EN

Brendan Gregg

BrendanGregg.com is the blog of Brendan Gregg, a performance engineer and computer scientist who shares deep expertise in system performance, observability, and kernel-level insights. His content covers topics like eBPF, Linux performance tools (perf, ftrace), flame graphs, and large-scale cloud systems analytics. Brendan writes with clarity about how to analyze bottlenecks, profile production systems, and tune infrastructure for speed and efficiency. The blog features both conceptual discussions and hands-on examples aimed at engineers tackling real performance problems in modern environments. Whether you are interested in kernel internals or high-level system design, BrendanGregg.com offers authoritative material grounded in years of experience.