First Initialization and Execution of ObjectMapper.readValue is Slow
I happened to find that first initialization and execution of
ObjectMapper.readValue of an application is slow, no matter if I reuse static
objectMapper or use new
objectMapper instance every time, the first-time cost won't disappear. But overall, static
objectMapper is faster than instance.
The first execution would cost about 420ms, however the second only needs 23ms. No matter I execute the static
objectMapper first or
objectMapper instance, the first one is the longest one.
Executable code: repo