GetEffectiveConnectionType is a public API in NQE (NetworkQualityEstimator). Currently, calling it forces NQE to recompute the ECT (EffectiveConnectionType). Since, recomputing ECT has some computational cost, we should change the internal details of the API:
(i) GetEffectiveConnectionType should return the last computed ECT.
(ii) NQE should dynamically recompute the ECT at regular intervals or when interesting events happen (e.g., change in connection type).