We just tried to upgrade a relatively large application to spring boot 2.3.0.RC1 which includes micrometer 1.5.0. The application relies on redis and we have included various metrics for lettuce ...

changed the title ConcurrentHashMap NullPointerException WeightCalculatorWebFilter.java ConcurrentHashMap NullPointerException on Apr 29, 2022 ...

The above class runs through several popular Map implementations (EnumMap, HashMap, LinkedHashMap, TreeMap, Hashtable, WeakHashMap, ConcurrentHashMap) and prints out whether each Map ...