加锁 同时队列(liè )可以(yǐ )无限(xiàn )长吗 什(shí )么时(shí )候消减,同时采用(yòng )了(le )弱(ruò )引用避(bì )免队(duì )列(liè )过大,造成gc压力 源码如下get recycle scavenge每(měi )次(cì )都(dōu )是(shì )从head节点获取,如(rú )果获取不到(dào )就next,这些队(duì )列并不删除(chú ),jvm会自动(dòng )在内存不(bú )够(gòu )的时候删除
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