is this keeping all records in memory?

[rejetto]

....other than on file, of course

[heineiuo]

@rejetto Thanks for your question! This depends which 'ENV' you use, the default ENV is

rippledb/port/node/index.ts

Lines 17 to 60 in 5a34bd4

	class NodeEnv implements Env {
	platform(): string {
	return os.platform();
	}
	/**
	* get current time
	*/
	now(): number {
	return Number(process.hrtime.bigint()) / Math.pow(10, 9);
	}
	onExit = onExit;
	access(dbpath: string): Promise<void> {
	return fs.promises.access(dbpath, fs.constants.W_OK);
	}
	mkdir(dbpath: string): Promise<void> {
	return fs.promises.mkdir(dbpath, { recursive: true });
	}
	writeFile = fs.promises.writeFile;
	readFile = fs.promises.readFile;
	open = fs.promises.open;
	rename = fs.promises.rename;
	unlink = fs.promises.unlink;
	unlinkSync = fs.unlinkSync;
	fstat = fs.promises.fstat;
	// eslint-disable-next-line
	readdir(dbpath: string) {
	return fs.promises.readdir(dbpath, { withFileTypes: true });
	}
	async infoLog(handle: FileHandle, message: string): Promise<void> {
	const finalMessage = `${new Date().toISOString()} ${message}\n`;
	await handle.appendFile(finalMessage);
	}
	async getFileSize(filename: string): Promise<number> {
	const stat = await fs.promises.stat(filename);
	return stat.size;
	}
	}

and it persist records on file system.

[rejetto]

well, i don't mean persistency, i want to know the memory footprint at run-time.
If i have data for 1GB, will rippledb use ram for 1GB+?

[heineiuo]

No, only records in MemTable are stored in memory, when some condition reached, a new MemTable will be created and the old MemTable will turn into immutable and write records to disk.