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Alex Rivera
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Blog { id:"001" title:"This is a test blog", content:"...." comments:[{title:"comment1",content:".."},{title:"comment2",content:"..."}] } comments is a inner list in blog. But how can I retrieve only comment1? and How can I insert/update a new comment into the blog?if I get a full blog and insert/update the content into comments List,then save the full blog,how to solve concurrent isuue? Thanks.
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