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  • Background re-encryption may affect performance. Performance impact can be managed using the following propertiesconfiguration options:
    1. IGNITE_REENCRYPTION_THREAD_POOL_SIZE reencryptionThreadCnt - number of threads used for reencryptionre-encryption.
    2. IGNITE_REENCRYPTION_BATCH_SIZE reencryptionBatchSize - number of pages that is are scanned during reencryption re-encryption under checkpoint lock.
      IGNITE_REENCRYPTION_THROTTLE - delay in milliseconds between batches during a partition scanning
    3. reencryptionRateLimit - page scanning speed limit in megabytes per second.
  • The WAL history can be not enough to store all entries between checkpoints (this should be carefully tuned by properly setting the size of the WAL history and tuning the re-encryption performance).
  • The WAL history (for delta rebalancing) may be lost for all cache groups due to background re-encryption.

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