Hello,
I am trying to increase the performance of the cache loading. I am
witnessing a strange behavior: as the number of objects increase in the
cache the number of objects loaded per seconds decrease. The database server
seems not to be the problem. To get some numbers I copy pasted the
CacheAbstractJdbcStore implementation and added a couple of logs to
understand what is going on.
In the method call : public Void call() throws Exception there is a block
while (rs.next()) {
K1 key = buildObject(em.cacheName, em.keyType(), em.keyKind(),
em.keyColumns(), em.keyCols, colIdxs, rs);
V1 val = buildObject(em.cacheName, em.valueType(), em.valueKind(),
em.valueColumns(), null, colIdxs, rs);
clo.apply(key, val);
}
Apparently the performance of the statement clo.apply(key, val) decreases
over time.
I first thought of a problem with the hashcode method that generates
collision but I made sure that I use a unique row id and that equals and
hashcode are based on it.
Any advice that would help me to understand where the problem comes from?
many thanks in advance
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