build1 publisher
MongoDB's planner drops index use for any $match placed after $group
A dev.to walkthrough puts the cost of an aggregation pipeline in stage order, index coverage and a 100 MB per-stage memory ceiling. The published text breaks off before the sharding section its own outline promises.
Publishers:dev.to
Reality
- Evidence45
- Adoption
- Insufficient
- Hype gap+25
- Incentives30
- Confidence60