Doctor Evidence Engineering & Development

Weak LRU Cache

Weak-referencing is powerful new feature in JavaScript and specifically has tremendous value in building caches that can actually leverage and work in harmony JavaScript’s garbage collection (GC) mechanism to maximize efficiency in caching objects in a way that GC can collect cached objects, but…

Building the Fastest JS (De)serializer

Virtually any interaction of data between computers, or storage of structured data involves serialization and deserialization, and therefore the performance of these methods is crucial for optimum application performance. In our clinical research applications…

Ordered Binary Representation of JS Primitives

Key-value stores are a powerful tool for fast storage of data. We use LMDB, which provides phenomenal performance, for caching data. However, storage systems like LMDB have a low-level interface, using binary data for keys (and values). In…

Preserving Our Humanity in Remote Work

Communication in the remote workplace isn’t easy.

Efficient Node Development with TypeScript

Our engineering team at Doctor Evidence places a high value on a fast, efficient, and responsive development environment. Development speed is highly dependent on immediate feedback as you code. Ensuring that the result of any code change can be seen in…

Graceful Shutdowns in NodeJS

We use a NodeJS-based server in our stack that is responsible for transforming data and caching content in LevelDB for fast access in the front-end. This, like any other HTTP server, handles HTTP requests from users. And when we need to update our code and restart this server…