 four metrics of your user-facing system, focus on these four.
                            </p>
                            <dl>
                                
                                <dd>
                                    <p>
                                        <a data-type="indexterm" data-primary="service latency" data-secondary="monitoring for" id="id-yYCASJS9FKIWUb"></a><a data-type="indexterm" data-primary="latency" data-secondary="monitoring for" id="id-VMCpF2SXFbIwU4"></a><a data-typ