// First configure StoreConfig
    var config = new StoreConfig();
    // true -> faster writes but can lose data if server goes down
    // false -> slower writes but safe data         
    config.setAsyncWrite(true);
    // if async, for every watermark amount of data, in memory is persisted
    config.setIndexJournalFlushWatermark(UtilConstants.MB * 10);
    // how big each segment files are
    config.setSegmentIndexFoldMark(UtilConstants.MB * 200);
    // faster reads at the cost of more memory
    config.setCacheEnabled(true);
    // if cache enabled how big is the cache
    config.setCacheSize(UtilConstants.MB * 5);
    
    // Thread pool for disk access
    ExecutorService diskAccessPool = Executors.newFixedThreadPool(10, Thread.ofVirtual().factory());
    var path = "path_to_store";
    // sample is the store name
    // creates store if not present
    // if present restores state        
    var store = Store.open(path, "sample", config, pool);
    
    // persist
    store.put("key".getBytes(), "val".getBytes());
    
    // retrieve 
    System.out.println(new String(store.get("key".getBytes())));