In Neo4j 4.0, Cypher introduced the pipelined runtime to optimize query planning.
In 4.1, we have added even more READ operators to the pipelined Cypher runtime.
These new operators include:
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NestedPlanExpression
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OptionalExpandAdd
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OrderedAggregation
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PartialSort
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PartialTop
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RollUpApply
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SemiApply
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AntiSemiApply
-
Skip
-
Union
-
ValueHashJoin
That brings to a total of operators for pipelined runtime to 48 that we have implemented.
We have just 8 operators that need to be implemented to fully support read in the pipelined runtime.
Pipelined read operators have improved READ performance by 11-50% in 4.1.
If you have extremely small queries (micro-second level), using slotted runtime will still be faster than pipelined.
