Sandy Liu Email & Phone Number

New York, New York, United States

• Constructed a HTTP caching solution for GraphQL queries, increasing data retrieval performance and responsiveness thereby reducing network traffic and page payload for client and server-side caching
• Designed a customizable in-memory caching middleware function to improve speed of data retrieval and require less server memory, utilizing a LRU eviction policy that employs a constant time complexity for repeated data.
• Integrated Redis, a secondary configuration option, providing vast key eviction policies to accommodate access pattern of an application and provide uninterrupted service in-case of any failures with its ability of.
• Used Amazon RDS’ scalability and data durability of a relational database in the cloud, amplifying its resizable hardware capacity and infrastructure efficiency to store mass collections of data
• Engineered GraphQL’s statically type data for its schemas and resolvers to avoid writing manual parsing code and retrieving precisely desire data without over- or under-fetching data, providing higher performance and.
• Utilized Chart.js to visually display decreased latency metrics from fetching to a REST endpoint in the database to utilizing DacheQL middleware for caching

Berlin, DE

• Implemented TypeScript’s static typing architecture for its early detection of improperly typed data to alert type-related errors at compilation time
• Created a PostgreSQL database for its ability of faster query processes and standardized schema, which allows for data consistency, security, and ACID compliance
• Accessed unit testing methodology with Jest to facilitate decreased software bugs and debugging processes before deployment

Berlin, DE

• Ensured security measures through Passport.js middleware with GitHub OAuth 2.0 for its simplicity in user login experience and its support in persistent sessions
• Integrated user profiles and session through the maintenance of JWT tokens in order to uniquely identify each user and maintain user state and data across the application
• Utilized a non-relational database with MongoDB for its ability to handle deeply nested and complex data structure and flexible document schemas

Berlin, DE

• Utilized React Router to dynamically and seamlessly route through a single-page application, rendering a full user interface that maps nested UI from its routes
• Configured Webpack to transpile all necessary files (JS, JSX, CSS, SCSS), providing minification and reduced load time with hot module reloading of the application during development
• Employed Node.js and Express middleware functions for its modularity to handle client request and deliver back its necessary data from a PostgreSQL database