How Tech - Systems Programming
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| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 105 | Founded | a year ago | Last Issue | 2 days ago |
| Active | |||||
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howtech.substack.comLatest Issues
DRBD: Kernel-Level High Availability and Replication
Part I — Article
DRBD: Synchronous Block Replication Without a SAN
Every database administrator has been there: two nodes, failover configured, Pacemaker watching heartbeats — and then the question nobody wants to face at 2 AM: did...
Optimizing Task Latency by Controlling CPU Caching in Schedulers
Every time the Linux scheduler migrates your task to another core, it silently hands you a latency bill.
Every time the Linux scheduler migrates your task to another core, it silently hands you a latency bill. The working set your task bui...
Deploying Network Security Monitoring with eBPF and Tracepoints
Every outbound connection your service makes passes through three kernel layers before the first byte reaches the wire.
Every outbound connection your service makes passes through three kernel layers before the first byte reaches the wire....
Implementing Custom Metrics Gathering Using BPF Ring Buffers
Before BPF_MAP_TYPE_RINGBUF, you streamed events from kernel to userspace through perf_event_array — one ring buffer per CPU, each consuming its full allocation whether that CPU was idle or saturated.
Before BPF_MAP_TYPE_RINGBUF, you strea...
Debugging sched_ext Behavior Using the sched_ext_dump Tracepoint
Linux 6.12 shipped CONFIG_SCHED_EXT — the extensible scheduler framework that lets you swap the entire CPU scheduler at runtime using a BPF program.
Linux 6.12 shipped CONFIG_SCHED_EXT — the extensible scheduler framework that lets you swa...
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The writers behind this newsletter.
Over two decades work experience at Silicon Valley, USA, CANADA and INDIA. Seasoned Principal Engineer with experience in developing complex, high-performance software solutions with a focus on low level system and distributed systems.
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