--- title: "Derrick Qin (@derrickqin) | Hashnode" description: "Senior Cloud Data Architect on AWS and GCP. Read the latest articles by Derrick Qin on Hashnode." url: "https://hashnode.com/@derrickqin" --- @derrickqin # Derrick Qin @derrickqin · Melbourne, Victoria, AU · Joined February 2022 Senior Cloud Data Architect on AWS and GCP ### [A lightweight model router for Gemini agents on CPU-only Cloud Run](https://derrickqin.com/a-lightweight-model-router-for-gemini-agents-on-cpu-only-cloud-run?utm_source=hashnode&utm_medium=feed) Cut Gemini agent costs on Cloud Run using Laya, a lightweight 421M model that routes requests on CPU without GPUs or third-party APIs. 8 min read · [derrickqin.com](https://derrickqin.com/a-lightweight-model-router-for-gemini-agents-on-cpu-only-cloud-run?utm_source=hashnode&utm_medium=feed) [Oct 25](https://hashnode.com/posts/a-lightweight-model-router-for-gemini-agents-on-cpu-only-cloud-run/6add87eef31315eb13cc302d) ### [Wiring a local model router into Antigravity: An experiment with LiteLLM and Laya](https://derrickqin.com/wiring-a-local-model-router-into-antigravity-an-experiment-with-litellm-and-laya?utm_source=hashnode&utm_medium=feed) Route Antigravity requests locally to Gemini Flash and Pro using LiteLLM and Laya to save tokens and protect privacy. 8 min read · [derrickqin.com](https://derrickqin.com/wiring-a-local-model-router-into-antigravity-an-experiment-with-litellm-and-laya?utm_source=hashnode&utm_medium=feed) [Oct 10](https://hashnode.com/posts/wiring-a-local-model-router-into-antigravity-an-experiment-with-litellm-and-laya/6adde15b018bf08f1a7a2b34) ### [Integrates DuckDB with Google BigQuery](https://derrickqin.com/integrates-duckdb-with-google-bigquery?utm_source=hashnode&utm_medium=feed) Seamlessly integrate DuckDB with Google BigQuery to enhance data processing capabilities and achieve efficient, cost-effective data management 5 min read · [derrickqin.com](https://derrickqin.com/integrates-duckdb-with-google-bigquery?utm_source=hashnode&utm_medium=feed) [Sep 24, 2025](https://hashnode.com/posts/integrates-duckdb-with-google-bigquery/68dcdce6189a947c82910a58) ### [Missing DAGs in Airflow UI: A Cloud Composer Filter Bug](https://derrickqin.com/missing-dags-in-airflow-ui-a-cloud-composer-filter-bug?utm_source=hashnode&utm_medium=feed) Discover solutions for missing DAGs in Airflow UI due to a known Cloud Composer Airflow bug and explore workarounds to resolve visibility issues 3 min read · [derrickqin.com](https://derrickqin.com/missing-dags-in-airflow-ui-a-cloud-composer-filter-bug?utm_source=hashnode&utm_medium=feed) [Aug 29, 2025](https://hashnode.com/posts/missing-dags-in-airflow-ui-a-cloud-composer-filter-bug/68b162d852e145539aa33448) ### [Effective Use of Google Cloud IAM Deny Policies for BigQuery Data Security](https://derrickqin.com/effective-use-of-google-cloud-iam-deny-policies-for-bigquery-data-security?utm_source=hashnode&utm_medium=feed) Learn to secure BigQuery data using Google Cloud IAM deny policies for robust access control and enhanced data protection 2 min read · [derrickqin.com](https://derrickqin.com/effective-use-of-google-cloud-iam-deny-policies-for-bigquery-data-security?utm_source=hashnode&utm_medium=feed) [Mar 28, 2025](https://hashnode.com/posts/effective-use-of-google-cloud-iam-deny-policies-for-bigquery-data-security/68dd195b469c3dffb8c192f5)