TIDB VLDB
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Background
● Hybrid Transactional and Analytical Processing (HTAP)
● Challenges:
○ Scale-out without pain
○ Reconciling different access patterns
■ OLTP
● Short / point access to small number of records
● Row-based format
■ OLAP
● Large / batch process of subset of columns
● Column-based format
○ Avoid workload interference (Resource isolation)
■ OLAP queries can easily occupy large amount of system resources
■ OLTP latency / concurrency will be dramatically impacted
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