"Java is continually pronounced dead by Cluebies - let's just hope none of these Cluebies provide investment advice; with a track record that consistently wrong they would have recommended every disaster from Enron to Lehman as the next big winner to invest in!"
"Percentiles (50th, 99th, 99.9th, 99.99th) are more accurate and informative than averages in the vast majority of distributed systems. Averages are normally only meanignfull for normal distribution statistics, and distributed systems tend to not show normal distribution for the statistics of most interest" and "Monitoring workflow consists of: collecting metrics; tracking them against a threshold; notifying if the threshold is breached; notifications are routed to the people that can handle them asap; providing dashboards (with drill down) that allow operators to see the status of (parts of) the system; providing trend visualization to allow identification and resolution of issues; and capacity analysis"
