Published
Let me examine your web worker implementation.
Read [](file:///Users/ad/Documents/GitHub/beringar-dashboard3/src/worker)
Searched for files matching `**/src/worker/**/*`, 7 matches
Read [](file:///Users/ad/Documents/GitHub/beringar-dashboard3/src/worker/worker.js)
Read [](file:///Users/ad/Documents/GitHub/beringar-dashboard3/src/worker/worker.api.js)
Read [](file:///Users/ad/Documents/GitHub/beringar-dashboard3/src/worker/constants.js)
Read [](file:///Users/ad/Documents/GitHub/beringar-dashboard3/src/worker/function/index.js)
Read [](file:///Users/ad/Documents/GitHub/beringar-dashboard3/src/worker/function/global-filter.js)
Read [](file:///Users/ad/Documents/GitHub/beringar-dashboard3/src/worker/function/custom-report.js)
Read [](file:///Users/ad/Documents/GitHub/beringar-dashboard3/src/worker/function/data-util.js)
Searched for regex `sendMessage|worker\.api` (`**/src/**/*.{js,vue}`), 11 results
## Web Worker Implementation Review & Enhancement Ideas
### Current Architecture
Your web worker handles three main operations:
1. **Custom Report Processing** - Data aggregation and calculations
2. **Global Data Filtering** - Multi-criteria filtering
3. **Data Merging** - Combining multiple datasets
### Issues Identified
**Critical Issues:**
1. **Memory Leak** - Workers are created but never terminated
2. **No Error Handling** - No rejection path in Promise
3. **Inefficient** - New worker instance for each operation
4. **No Timeout Protection** - Can hang indefinitely
### Recommended Enhancements
#### **1. Worker Pool Management**
```javascript
// Reuse workers instead of creating new ones each time
class WorkerPool {
constructor(size = 2) {
this.workers = [];
this.queue = [];
this.size = size;
}
async execute(message) {
const worker = await this.getAvailableWorker();
return this.sendTask(worker, message);
}
}
```
#### **2. Add Error Handling & Timeout**
```javascript
function sendMessage(params, timeout = 30000) {
return new Promise((resolve, reject) => {
const timer = setTimeout(() => {
worker.terminate();
reject(new Error('Worker timeout'));
}, timeout);
worker.addEventListener('error', (error) => {
clearTimeout(timer);
worker.terminate();
reject(error);
});
});
}
```
#### **3. Transfer Large Data (Avoid Cloning)**
```javascript
// Use Transferable objects for large arrays
const buffer = data.buffer;
worker.postMessage({ type, buffer }, [buffer]);
```
#### **4. Progress Reporting**
```javascript
// For long-running tasks
self.addEventListener('message', async (params) => {
const total = params.data.results.length;
for (let i = 0; i < total; i++) {
// Process item
if (i % 100 === 0) {
self.postMessage({ type: 'progress', percent: (i/total)*100 });
}
}
self.postMessage({ type: 'complete', data: results });
});
```
#### **5. Add ComLink for Better DX**
```javascript
// Use Comlink library for cleaner API
import { wrap } from 'comlink';
const worker = wrap(new Worker('./worker.js'));
const result = await worker.filterGlobalData(filterData, data);
```
#### **6. Batch Processing for Large Datasets**
```javascript
function* chunkArray(arr, size) {
for (let i = 0; i < arr.length; i += size) {
yield arr.slice(i, i + size);
}
}
// Process in chunks to avoid blocking
for (const chunk of chunkArray(largeData, 1000)) {
await processChunk(chunk);
}
```
#### **7. Add Worker Feature Detection**
```javascript
function createWorkerWithFallback() {
if (!window.Worker) {
// Fallback to main thread
return {
postMessage: (data) => handleTaskSync(data)
};
}
return new Worker('./worker.js', { type: 'module' });
}
```
#### **8. Memoization/Caching**
```javascript
// Cache results for repeated calls
const cache = new Map();
self.addEventListener('message', (params) => {
const key = JSON.stringify(params.data);
if (cache.has(key)) {
return self.postMessage(cache.get(key));
}
const result = processData(params.data);
cache.set(key, result);
self.postMessage(result);
});
```
#### **9. Shared Workers for Cross-Tab**
```javascript
// If multiple tabs need same data
const sharedWorker = new SharedWorker('./shared-worker.js');
sharedWorker.port.postMessage(data);
```
#### **10. Performance Monitoring**
```javascript
self.addEventListener('message', (params) => {
const start = performance.now();
const result = processData(params.data);
const duration = performance.now() - start;
self.postMessage({ result, metrics: { duration } });
});
```
### Priority Implementation Order:
1. **Fix memory leak** - Terminate workers after use
2. **Add error handling** - Reject promise on errors
3. **Add timeouts** - Prevent hanging operations
4. **Worker pool** - Reuse workers for better performance
5. **Transferable objects** - For large datasets (if applicable)
6. **Progress reporting** - For long operations (custom report processing)
Would you like me to implement any of these enhancements?