vidardb-engine
                                VidarDB engine is a modern embedded key-value store with a versatile storage engine. It is a lineage of LevelDB and RocksDB, but with support of various workloads.
                            
                        How to download and setup vidardb-engine
Open terminal and run command
                                            git clone https://github.com/vidardb/vidardb-engine.git
                                        
                                        git clone is used to create a copy or clone of vidardb-engine repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with vidardb-engine https://github.com/vidardb/vidardb-engine/archive/master.zip
Or simply clone vidardb-engine with SSH
                                            [email protected]:vidardb/vidardb-engine.git                                    
                                    If you have some problems with vidardb-engine
You may open issue on vidardb-engine support forum (system) here: https://github.com/vidardb/vidardb-engine/issuesSimilar to vidardb-engine repositories
Here you may see vidardb-engine alternatives and analogs
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