In one of my projects I had to load over a million key-value pairs into Infinispan cache at application startup (local cache, no transactions).
At first I used individual put(K,V) method invocations and this took around 2 minutes to finish Infinispan cache population. I tried to find online whether putAll(Map<K,V)) method should be faster than individual put invocations - but could not find any information in Infinispan documentation or elsewhere.
After switching to putAll() instead of put() I was able to load same pairs in a matter of 20 seconds.
So, in case you are interested, putAll() is faster for inserts than individual put() invocations. I guess it would be great if this was clearly documented.
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