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Read writer memory optimize

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This commit is contained in:
Eli-Class
2026-02-05 05:36:36 +00:00
parent 132189da48
commit 92a2681292
8 changed files with 118 additions and 87 deletions
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6
lib/dat/reader.ts
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@@ -1,5 +1,6 @@
// src/data-file/reader.ts
import * as fs from 'node:fs';
import * as fsext from 'fs-ext';
import { DATA_HEADER_SIZE } from './constants.js';
import { DataProtocol, DataHeader } from './protocol.js';
import { IndexReader } from '../idx/index.js';
@@ -28,7 +29,7 @@ export class DataReader<T> {
// Read header only
const headerBuf = Buffer.alloc(DATA_HEADER_SIZE);
fs.readSync(this.fd, headerBuf, 0, DATA_HEADER_SIZE, 0);
fs.readSync(this.fd, headerBuf, 0, DATA_HEADER_SIZE, null);
this.header = DataProtocol.readHeader(headerBuf);
this.indexReader.open(this.indexPath);
@@ -36,7 +37,8 @@ export class DataReader<T> {
private readRecordAt(fd: number, offset: bigint, length: number): { data: T; length: number } | null {
const buf = Buffer.alloc(length);
fs.readSync(fd, buf, 0, length, Number(offset));
fsext.seekSync(fd, Number(offset), 0);
fs.readSync(fd, buf, 0, length, null);
const result = DataProtocol.deserializeRecord(
buf,
0,