Noah Hsu – Medium

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Level Up Coding

Safely Deliver Large Scale Feature Migration With Feature Toggle

a migration schedule that once the development is done, we need no code change to manage the feature execution for test and canary release.

10 min readDec 21, 2023

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Safely Deliver Large Scale Feature Migration With Feature Toggle

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Noah Hsu
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Level Up Coding

How to design an efficient Idempotency API

Unique Request Identifier, Placement after Auth-Filter,

5 min readNov 22, 2023

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How to design an efficient Idempotency API

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Javarevisited

Say Goodbye to meaningless code for Controller and Service with Spring-Data-Rest

Build API with Spring-Data-Rest and create corresponding OpenFeign client

7 min readApr 4, 2023

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Say Goodbye to meaningless code for Controller and Service with Spring-Data-Rest

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Noah Hsu
in
Level Up Coding

High Availability Deployment by Pod Topology Spread Constraints in K8s Cluster

In the modern world, running a high-availability service is the most important thing for the users. As Kubernetes is getting more common…

3 min readApr 22, 2024

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High Availability Deployment by Pod Topology Spread Constraints in K8s Cluster

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Noah Hsu
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Level Up Coding

Design an Easy-to-Test, Flexible Application with Config Server, Toggle System, and Mock Server

In the modern software’s fast-paced environment, the ability to swiftly adapt to changing requirements and market demands is the key to…

6 min readMar 31, 2024

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Design an Easy-to-Test, Flexible Application with Config Server, Toggle System, and Mock Server

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Noah Hsu
in
Level Up Coding

Tackle Performance Issues about Generative AI within a Kafka Pipeline System

Kafka pipeline system architecture with some high-latency Generative AI APIs, how to improve the performance of the entire pipeline

7 min readFeb 15, 2024

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Tackle Performance Issues about Generative AI within a Kafka Pipeline System

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Noah Hsu
in
Level Up Coding

Spring Boot 3: build the efficient Idempotent API by Redis

Idempotency API means that the data/system state will be the same no matter how many times the API is successfully called with the same…

10 min readJan 25, 2024

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Spring Boot 3: build the efficient Idempotent API by Redis

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Noah Hsu
in
Level Up Coding

Three Ways to Solve CORS Issue in the Embed Swagger Page in Backstage

Using 3 ways to solve the CORS issue with slight code changes brings more convenience when others integrate/try API by reading on…

5 min readOct 22, 2023

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Three Ways to Solve CORS Issue in the Embed Swagger Page in Backstage

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Noah Hsu
in
Level Up Coding

Easier, Flexible, and Lower Resource Cost Deployment Strategies by Feature Toggle

introducing how to do Blue/Green, Canary, A/B Test or Shadow deployment by feagure toggle with OpenFeature spec

9 min readSep 27, 2023

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Easier, Flexible, and Lower Resource Cost Deployment Strategies by Feature Toggle

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Noah Hsu
in
Level Up Coding

Centralize All Needed Knowledge in One Developer Portals Through Spotify Backstage.

enhance developer experience by Backstage, a developer portal to centralize all knowledge required for development, maintenance, monitoring

8 min readJul 31, 2023

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Centralize All Needed Knowledge in One Developer Portals Through Spotify Backstage.

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Noah Hsu

Noah Hsu

Java ServerSide Engr🚀, Focusing on Spring, Toggle system, Kafka, Event Sourcing, and CI/CD. Support my work with a 🍺. https://www.buymeacoffee.com/swbhcjhtyvv

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