  In recent years, the $T$-linear scattering rate found at low temperatures,
defining the strange metal phase of cuprates, has been a subject of interest.
Since a wide range of materials have a scattering rate that obeys the equation
$ \hbar / \tau \approx k_B T$, the idea of a universal Planckian limit on the
scattering rate has been proposed. However, there is no consensus on proposed
theories yet. In this work, we present our results for the $T$-linear
scattering rate in the triangular lattice Hubbard model obtained using the
dynamical cluster approximation. We find two regions with $T$-linear scattering
rate in the $T$ -- $p$ phase diagram: one emerges from the pseudogap to
correlated Fermi liquid phase transition at low doping, whereas the other is
solely caused by large interaction strength at large doping.
