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🥇 @malathi-shetty 11 solved
🥈 @arun-kumar 1 solved

Kafka: quota

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Pandas: groupby agg multiple

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Airflow: not for streaming

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Spark: immutable rdd

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DBMS: composite index order

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Elasticsearch: denormalize es

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Cassandra: collection type

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DataViz: log scale

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DynamoDB: batchwriteitem

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Hadoop: balancer

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MySQL: user privileges

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Neo4j: count neo4j

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Partition by

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MongoDB: when NoSQL

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Kafka: seek

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Pandas: pivot vs pivot_table

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Airflow: task isolation

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Spark: lineage

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DBMS: surrogate key

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Elasticsearch: no joins

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Cassandra: static column

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DataViz: reference line

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DynamoDB: query sort condition

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Hadoop: safe mode

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MySQL: connection pool mysql

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Neo4j: relationship direction match

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Referential action

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DataEng: dedup

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PostgreSQL: check constraint

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Kafka: earliest

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Pandas: interpolate

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Airflow: external trigger

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Spark: sql temp view

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DBMS: optimistic locking

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Elasticsearch: mapping immutable

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Cassandra: write timestamp

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DataViz: tooltip

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DynamoDB: pagination dynamo

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Hadoop: fsimage

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MySQL: temp table

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Neo4j: undirected match

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DataEng: surrogate key

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MongoDB: $or

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Redis: FLUSHDB

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Kafka: transactional id

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Airflow: dataset trigger

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Spark: agg functions

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DBMS: pessimistic locking

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Elasticsearch: shard failure

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Cassandra: lww

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DataViz: overplotting

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DynamoDB: reserved words

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Hadoop: edit log

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MySQL: truncate

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Neo4j: property access

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Trigger

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DataEng: spark cache

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MongoDB: $exists

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Redis: memory analysis

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Kafka: partition assignment key

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