Uses
What I reach for in real work. No aspirational shelfware, only tools running in production or in active projects.
AI / LLM
Python
Daily driver for APIs, ETL, and experiments.
LangChain / LangGraph
Agent and RAG orchestration.
Qdrant
Vector store for RAG.
LangFuse
LLM tracing and eval.
Data
Apache Spark
Batch processing on Tencent DLC.
Pandas
Exploration and small-batch transforms.
PostgreSQL
Schema design and timestamp-heavy tuning.
Parquet + Athena
Partitioned lake queries.
Backend & Infra
FastAPI
Production REST APIs, Tencent SCF serverless.
Docker
Model and service containers.
AWS
Glue, SageMaker, EC2, Lambda, S3.
Tencent Cloud
SCF, WeData, DLC. Current platform.
GitHub Actions
CI/CD for site and services.