openclaw - 💡(How to fix) Fix Memory: Session files loaded entirely into memory via readFileSync

TL;DR

Implement lazy loading and streaming for session files to reduce memory consumption.

Guidance

• Identify the most memory-intensive session files and prioritize lazy loading for those first.
• Consider implementing a streaming mechanism for session messages to avoid loading entire files into memory at once.
• Splitting the large sessions.json file into smaller, per-session metadata files could help reduce memory usage.
• Evaluate the feasibility of implementing an LRU cache for active sessions to further optimize memory usage.

Example

// Example of lazy loading a session file
const fs = require('fs');
const sessionFilePath = 'path/to/session.jsonl';
fs.createReadStream(sessionFilePath, { encoding: 'utf8' })
  .on('data', (chunk) => {
    // Process the chunk of session data
  })
  .on('end', () => {
    // Session file has been fully loaded
  });

Notes

The provided suggestions assume that the OpenClaw gateway has the necessary infrastructure to support lazy loading and streaming. Additionally, the effectiveness of these suggestions may vary depending on the specific use case and requirements of the gateway.

Recommendation

Apply workaround: Implement lazy loading and streaming for session files, as this approach is likely to have the most significant impact on reducing memory consumption.