Limit redis alloc size#3050
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What problem does this PR solve?
Issue Number: null
Problem Summary: redis request or response may have a too large size that cause the server to consume too much memory.
What is changed and the side effects?
Changed: Add a limit for allocation size
Side effects:
Performance effects: no
Breaking backward compatibility: Some redis request/response may fail to parse if the data size exceed the default value of redis_max_allocation_size (64M). User can adjust the flag redis_max_allocation_size for their senarios.
Check List: