crawler: --no-cover, --concurrency, drop cross-host sleep + batch-50 Step 1 done
Three crawler ergonomics for batch operations:
--no-cover Skip cover image download. For scan-only modes (license/meta
scrape) this drops ~1.3s/project and avoids slow-CDN hangs.
--concurrency N ThreadPoolExecutor wrapping the per-project loop. Default
1 = serial (current behavior). Anonymous endpoints tolerate
5+ comfortably; output uses a print lock for readable
interleaved progress. fetch_cover plumbs through crawl_one.
Drop cross-host sleep #1: in crawl_one between detail HTML (oshwhub.com)
and cover image (image.lceda.cn). Different hosts — sleep was unnecessary.
Saves ~1s/project. Sleep #2 (post-cover, before next iteration) stays — it
gates the next oshwhub.com hit.
download_to gains max_seconds wall budget (default 60s, cover uses 15s).
Defends against pathologically slow CDN connections — observed 10 KB/s
on image.lceda.cn for one project, would have hung 6+ min on a 3.6 MB
cover otherwise. httpx default timeout resets per chunk, so streaming
downloads need an external wall-clock guard.
batch-50 Step 1 (license/meta scrape) shipped:
50/50 candidates have metadata.json + license recorded
License distribution: GPL 3.0 32, Public Domain 6, NC variants 8,
CERN-OHL 1, MIT 1, CC BY 3.0 1
Forge-friendly (non-NC): 41/50 (82%)
Declared attachments: 180 files / 2.36 GB (median 18 MB/proj, max 304 MB)
Walltime: 3min 26s for 28 projects at concurrency=5 (server-side
HTML render bound, not sleep-bound)
One orphan partial cover (a670e60a...) cleaned up — leftover from the
first aborted run before the timeout fix landed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
16
data/raw/oshwhub/d46ef2f68e334a72961d48ba0cfbcae2/_urls.json
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16
data/raw/oshwhub/d46ef2f68e334a72961d48ba0cfbcae2/_urls.json
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@@ -0,0 +1,16 @@
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{
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"detail_url": "https://oshwhub.com/leichaolin/xing-huo-ji-hua-3.5KWda-gong-shu",
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"cover_url": "https://image.lceda.cn/pullimage/MRyi3ahztovD8GJ41WF45V4kDsBxmjORiGMJMfgG.jpeg",
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"attachments": [
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{
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"name": "大功率逆变器.rar",
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"url": "https://image.lceda.cn/attachments/2023/4/lY5ZmDHS1pPWbkz09ArxBQzrMtOkHgWkXg1E6i1S.rar",
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"original_id": "f52a12973e38414393a6e8e5a33e4d58"
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},
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{
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"name": "测试视频~1.mp4",
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"url": "https://image.lceda.cn/attachments/2023/4/XVzBmyirf4i9RMb2jekEkfnxKLgcj37ImQFvVNxq.mp4",
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"original_id": "4063798e3aa641d1ad36522aef485643"
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}
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]
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}
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BIN
data/raw/oshwhub/d46ef2f68e334a72961d48ba0cfbcae2/cover.jpeg
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BIN
data/raw/oshwhub/d46ef2f68e334a72961d48ba0cfbcae2/cover.jpeg
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After Width: | Height: | Size: 702 KiB |
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# 3.5KW大功率逆变器 【星火计划】
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输入24-72V输出220V的3.5KW逆变器
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---
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- Source: https://oshwhub.com/leichaolin/xing-huo-ji-hua-3.5KWda-gong-shu
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- Author: 雷老师讲电子 (leichaolin)
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- License: CC BY-NC-SA 4.0
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- Published: 2023-08-30T05:53:35.000Z
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@@ -0,0 +1,59 @@
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{
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"source": "oshwhub",
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"source_url": "https://oshwhub.com/leichaolin/xing-huo-ji-hua-3.5KWda-gong-shu",
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"project_id": "d46ef2f68e334a72961d48ba0cfbcae2",
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"title": "3.5KW大功率逆变器 【星火计划】",
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"description_short": "输入24-72V输出220V的3.5KW逆变器",
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"description_path": "description.md",
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"author": {
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"username": "leichaolin",
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"display_name": "雷老师讲电子",
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"user_id": "a481b71acdb44a3f8c8a15fe621c992f"
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},
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"license": "CC BY-NC-SA 4.0",
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"tags": [],
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"created_at": "2023-02-26T06:48:02.000Z",
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"updated_at": "2025-09-10T00:24:08.000Z",
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"published_at": "2023-08-30T05:53:35.000Z",
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"crawled_at": "2026-04-28T17:24:26.121076+00:00",
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"metrics": {
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"likes": 536,
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"stars": 1102,
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"forks": 0,
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"views": 119662,
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"watch": 0,
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"comments": 256
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},
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"cover": {
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"url": "https://image.lceda.cn/pullimage/MRyi3ahztovD8GJ41WF45V4kDsBxmjORiGMJMfgG.jpeg",
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"path": "cover.jpeg"
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},
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"files": [
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{
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"name": "大功率逆变器.rar",
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"url": "https://image.lceda.cn/attachments/2023/4/lY5ZmDHS1pPWbkz09ArxBQzrMtOkHgWkXg1E6i1S.rar",
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"original_id": "f52a12973e38414393a6e8e5a33e4d58",
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"ext": "rar",
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"mime": "application/octet-stream",
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"size": 37253378,
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"md5": "1727eb8f04cd821338651f96786ce5b6"
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},
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{
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"name": "测试视频~1.mp4",
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"url": "https://image.lceda.cn/attachments/2023/4/XVzBmyirf4i9RMb2jekEkfnxKLgcj37ImQFvVNxq.mp4",
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"original_id": "4063798e3aa641d1ad36522aef485643",
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"ext": "mp4",
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"mime": "video/mp4",
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"size": 45694880,
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"md5": "fc5d723e587f0a1a2eb7a0982dc1e125"
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}
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],
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"raw_fields": {
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"path": "leichaolin/xing-huo-ji-hua-3.5KWda-gong-shu",
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"grade": 4,
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"origin": "pro",
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"public": true,
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"publish": true,
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"skipped_files": []
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}
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}
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