Master Coding Skills &
System Design.

Learn how to resolve merge conflicts — conflict markers, merge tools, and prevention.

Learn jQuery event handling — .on(), .off(), event delegation, preventing defaults, and common events like click, hover, keyup, and submit.

Learn file permissions — read/write/execute, chmod, chown, and groups.

Learn EXPLAIN FORMAT=JSON, EXPLAIN ANALYZE, and identifying bottlenecks.

Learn Python functions — def, positional and keyword arguments, default values, *args, **kwargs, and variable scope.

Learn tsvector, tsquery, GIN indexes, ranking, and multi-language search.

Learn caching strategies — cache-aside, write-through, TTL, eviction policies, and Redis vs Memcached.

Learn aggregate functions, GROUP BY to group results, and HAVING to filter groups.

Build a REST API with JWT auth, validation, and proper HTTP responses.