87 tough, architect-level Salesforce developer questions: Apex and LWC code snippets, test classes, Platform Events, Change Data Capture, the Stub API, and real-world scenarios. Instant explanations for every answer. Free, in your browser, no signup.
This is not a certification dump. Every question asks you to predict what the platform actually does: what a trigger sees under partial-success DML, what Test.startTest really resets, why a wire provisions before connectedCallback, what a platform event's SaveResult does and does not promise, or how a CDC subscriber survives a GAP_OVERFLOW. Wrong answers get a full explanation of why the tempting option fails, so every miss teaches something.
Savepoints, partial-success retries, Id vs String equality, rounding, transaction boundaries.
Lifecycle timing, reactivity traps, event retargeting, wire mechanics.
Governor-limit boundaries, Queueable chains, event delivery, the Stub API.
Platform Events, Change Data Capture, replay and idempotency.
Record locking, LDV, Bulk API behavior, big objects.
Teams use it to calibrate interview bars and to pressure-test senior developers before architecture reviews.