Percona XtraDB Cluster (PXC) offers a great deal of flexibility when it comes to the state transfer (SST) options (used when a new node is automatically provisioned with data). For many environments, on-the-fly compression capability gives great benefits of saving network bandwidth during the process of sending sometimes terabytes of data. The usual choice for compression here is a built-in Percona XtraBackup compress option (using qpress internally), or options compressor/decompressor for the compression tool of choice. In the second case, the popular option is the gzip or its …
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