TE tech_hi_tech_dosto Java- future and callable(runnable) vs completable future and executor framework and much more Callable is the task to be executed.
SCI TCH TE tech_hi_tech_dosto System Design -Consistent Hasing Consistent hashing maps both nodes(eg. databases/backend server) and keys(events/requests) into the same hash space (a circle). A key…
TE tech_hi_tech_dosto System Design -Sharding, Partitioning, Indexing, and all about databases Mental model — a big square(map) having different colors , when we cut it and rejoin it using tape — sharding and when we hide it and…
AI TE tech_hi_tech_dosto DAG + Topological Sort: The Execution Model for AI Workflows utilise DAG + topological to build multi agent system-
TE tech_hi_tech_dosto Database- N+1 query problem Fix 1: JOIN FETCH in JPQL → “SELECT o FROM Order o JOIN FETCH o.customer” — loads everything in ONE query
