HanCloud Blog

Engineering practice, product thinking, and industry perspectives

Practical lessons and long-term thinking from the HanCloud team.

Engineering Blog

From the HanCloud engineering team

Architecture decisions, performance retrospectives, and hard-won lessons for engineers building infrastructure.

Architecture

Three years of HanCloud's scheduler: from one region to global elasticity

How we rewrote the scheduler to move workloads across three continents in seconds while keeping cross-region latency predictable—and the trade-offs we made.

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Marco Reyes

May 28, 2026

Observability

Reconstruct every incident from a 1% sample

How we keep distributed tracing cost-effective while still capturing rare anomalous requests.

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Aisha Karim

May 20, 2026

Elastic compute

Cold start time reduced from 1.8s to 400ms

Warm pools, layered images, and runtime snapshots reshape the startup experience for serverless functions.

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Zhou Mubai

May 14, 2026

edge

Run compute within 20 ms of your users

How we chose HanCloud edge locations, designed origin routing and consistency, and learned from mistakes along the way.

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Lin Zhihua

May 6, 2026

Security

Multi-tenant isolation goes beyond namespaces

From kernel cgroups to network micro-segmentation, how we maintain hard isolation boundaries on shared infrastructure.

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Su Wan

April 29, 2026

data

Designing an event bus for millions of metrics

Backpressure, batching, and partitioning strategies build an internal pipeline that won't collapse during traffic spikes.

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Elena Volkov

April 22, 2026

Developer experience

The quarter we rewrote the documentation site

Developer experience starts with the first curl. Here's how we cut time to first success in half.

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Daniel Osei

April 15, 2026