Writing
Blog
Notes on platform architecture, legacy migrations, data engineering and markets — from production systems and side projects.
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Migrating a 17-year-old WebLogic system to microservices with zero downtime
How Customer Vault and Bank Core moved off legacy WebLogic by shadowing live traffic with Envoy, proving parity with OpenDiffy, and shifting users over a percentage at a time.
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The bitcoin miner I imported in 2016 — and the mining farm that never happened
An Antminer S9 from Bitmain, a farm plan undone by demonetisation, Slush Pool payouts too small to withdraw — and what Bhutan and Nepal's hydropower say about mining today.
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