Shape is identity -- same fields/variants means same type
3月2日，布伦特原油一度跳涨 13%至82美元/桶附近，全球能源与大宗商品价格整体抬升，A股化工板块亦在这一轮地缘政治“黑天鹅”中成为资金新的进攻方向。化工ETF（516020、159870、516570）等产品放量上涨，多只化工股连续涨停，背后的本质，是关键化工原料的全球供给链被打穿，价格中枢被迫上移。
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Under load, this creates GC pressure that can devastate throughput. The JavaScript engine spends significant time collecting short-lived objects instead of doing useful work. Latency becomes unpredictable as GC pauses interrupt request handling. I've seen SSR workloads where garbage collection accounts for a substantial portion (up to and beyond 50%) of total CPU time per request. That's time that could be spent actually rendering content.