wp

storage/storage.go

@@ -0,0 +1,32 @@
+package storage
+
+const (
+
+	//PageNoSize    = 4
+
+	// data page
+	DataPageSize            = 8192
+	DataPageFooterSize  int = 12
+	DataPagePayloadSize int = DataPageSize - DataPageFooterSize
+
+	dataCRC32Idx      = DataPageSize - 4
+	timestampsSizeIdx = DataPageSize - 6
+	valuesSizeIdx     = DataPageSize - 8
+	prevPageIdx       = DataPageSize - 12
+
+	// index page
+	IndexPageSize         = 1024
+	IndexPageFooterSize   = 7
+	indexRecordSize       = 8
+	maxRecordsOnIndexPage = (IndexPageSize - IndexPageFooterSize) / indexRecordSize
+
+	//indexPageIncSize     = IndexPageIncSize
+	indexCRC32Idx        = IndexPageSize - 4
+	indexRecordsCountIdx = IndexPageSize - 6
+	isZeroLevelIdx       = IndexPageSize - 7
+
+	// timestampSize  = 4
+	// pairSize       = timestampSize + PageNoSize
+	// indexFooterIdx = indexRecordsQtyIdx
+	// dataFooterIdx  = timestampsSizeIdx
+)