Authentication in web apps using an Estonian ID card with Nginx is pretty straightforward (although quite unstable). Initial setup Simple ID card authentication boils down to: Enable One-Way TLS on your main domain (e.g. app.example.com) Enable Two-Way TLS on a secondary domain (e.g. id.example.com) using the ID card certificate chain. Redirect user from main site […]
Assigning static IP address to Google App Engine
Why? GAE(Google App Engine) is a great choice for developers who want to build and deploy applications in a minute. Thanks to a fully managed serverless platform, you are free from the painful server configuration for deployment as well as automatic scaling. But there is a problem that comes with the cost. Because GAE dynamically […]
Managing OpenAPI specification
The usual document structure Taking a look at the OpenAPI specification file, there are several distinct sections: Information – which usually includes the title, version, some description, terms of service, etc. Servers – where we describe the servers that we use, usually split into production, staging, etc. Paths – resources that our API exposes and […]
SQL Query Performance Optimization
Need of Optimization In most IT systems, the database is an integral part. Data needs to be processed from databases to actually use it — and SQL is the standard interface language used to query the Database for data. Most of the time, SQLs written to communicate with the Database are simple, easy and fast. […]
Using Emscripten/WebAssembly in web workers and interacting with native C/C++ code concurrently
What problem are we trying to solve? JavaScript runs in a single thread per web-page in the browser. This limitation prevents CPU intensive work on client side (encoding/decoding, complex calculations, etc…). Let’s see how WASM and WebWorkers help pull through these problems by porting native C/C++ libraries to the web and interact with them concurrently. […]