What does ignite-atomics-sys-cache do and how many backups should it set?

[Jason]

hi Ignite,

1. what does ignite-atomics-sys-cache do? from the below code, seems that it
contains some locks for the ignite.
            dsView = atomicsCache;
            cntDownLatchView = atomicsCache;
            semView = atomicsCache;
            reentrantLockView = atomicsCache;
            atomicLongView = atomicsCache;
            atomicRefView = atomicsCache;
            atomicStampedView = atomicsCache;
            seqView = atomicsCache;

2. In the AtomicConfiguration, its default backup is 0. If for the best
practice, how many backup should it be set?

Thanks,
-Jason



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