Middleware Engineer Interview Questions and Answers

Authentication and authorization are implemented using OAuth2.0. Databases are replicated using a master-slave architecture. Microservices communicate via REST APIs and are deployed using Docker containers.

• OAuth2.0 is used for authentication and authorization

• Master-slave architecture is used for database replication

• Microservices communicate via REST APIs

• Docker containers are used for deployment

Error seen in deployment can vary depending on the specific issue, such as configuration errors, network issues, or resource constraints.

• Common errors include configuration errors, such as incorrect file paths or missing dependencies.

• Network issues can cause errors, such as communication failures between components.

• Resource constraints, like insufficient memory or CPU, can lead to deployment errors.

• Examples: '404 Not Found', 'Connection refused', 'Out of memory error'

Errors expected in middleware engineering include configuration errors, network issues, and software bugs.

• Configuration errors such as incorrect settings in middleware configurations

• Network issues like connectivity problems or latency issues

• Software bugs in the middleware code that can cause unexpected behavior

• Security vulnerabilities that can lead to data breaches or unauthorized access

AOSP build system is based on makefiles and uses various tools like repo and lunch to manage the build process.

• AOSP build system uses makefiles to define build rules and dependencies.

• Repo tool is used to manage multiple git repositories that make up the AOSP source code.

• Lunch tool is used to select the target device and configuration for the build.

• Build configurations are defined in Android.mk files within each module.

• Build artifacts are stored in out/ directory after the bui...read more