Technical Insights & Architecture Papers
Deep-dives on high-throughput backend architecture, Python & Django performance, real-time Voice AI, and resilient database modeling.
TCP BBRv3 Congestion Control in Production: Slashing Tail Latency & Bufferbloat for Real-Time LLM Token & Audio Streams
Discover how switching Linux kernel congestion control from Cubic to BBRv3 eliminates bufferbloat and slashes p99 tail latency across WebSockets, WebRTC media, and streaming LLM token delivery.
eBPF XDP (eXpress Data Path) Line-Rate Packet Filtering: Dropping Volumetric DDoS & Malicious Scanners at the NIC Ring Buffer
Standard iptables and nftables choke under multi-gigabit SYN floods and brute-force scans. Harness eBPF XDP programs to inspect and discard packets directly at the network card driver before OS kernel allocation.
Linux Kernel Dirty Page Writeback & I/O Stalls: Tuning vm.dirty_ratio for Heavy PostgreSQL WAL and Logging Workloads
When Linux page caches fill up during heavy write spikes, synchronous flush stalls freeze database transactions. Understand kernel pdflush/flusher threads, dirty_ratio, dirty_background_ratio, and NVMe tuning.
Linux io_uring vs. Epoll: Achieving True Asynchronous Storage and Network I/O in Modern Backend Systems
While epoll revolutionized network concurrency, it fundamentally fails on disk storage and incurs heavy syscall context-switch overhead. Explore how Linux's io_uring ring-buffer architecture achieves zero-syscall asynchronous I/O.
Multithreading vs. Multiprocessing in Production Python: Memory Footprints, Copy-on-Write Thrashing, and CPU-Bound Sizing
CPython's Global Interpreter Lock and Linux memory management create subtle traps when scaling workers. Learn how Copy-on-Write breaks during garbage collection, how to measure RSS bloat, and how to size threads vs. processes for maximum throughput.
eBPF-Powered Kernel Observability: Profiling Socket Drops, TCP Retransmits, and TLS Handshake Latency in Linux
Intermittent 502/504 errors between edge proxies and backend microservices often remain invisible in APM logs. Learn how eBPF kernel probes trace TCP backlog overflows and socket drops with zero application overhead.