Focused crawls are collections of frequently-updated webcrawl data from narrow (as opposed to broad or wide) web crawls, often focused on a single domain or subdomain.
Bring RocksDB to PostgreSQL as an extension. It is the first foreign data wrapper (FDW) that introduces LSM-tree into PostgreSQL. The underneath storage engine can be RocksDB. The FDW also serves for VidarDB engine, a versatile storage engine for various workloads. See the link for more info about VidarDB engine.
BBoxDB is a scalable, highly available, and distributed data store for multi-dimensional big data. The software supports operations like multi-dimensional range queries and spatial joins. In addition, data streams are supported.
Kunlun-storage is the storage component for Kunlun distributed DBMS. It's developed based on percona-mysql-8.0.x and contains exclusive features used by Kunlun distributed DBMS, performance enhancements and XA transaction crash safety enhancements without which MySQL would not be able to execute XA transactions reliably.
supportMulticlient = false, only one client can mount on a fs.
supportMulticlient = true, multi client can mount on a fs.