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Hacks for better performance at Data Warehouse

Hacks for better performance at Data Warehouse

In this blog, we have covered the steps which should be followed in order to design a Data Warehouse which can give good performance.

most of these points in the previous Q.7 wherein we had explained about the performance of the data warehouse. However we are re-iterating the points below as well for more clarity.

(A) Implement indexing for fast data retrieval. Analyze workloads and query patterns to identify the appropriate indexes to create, ensuring that frequently accessed columns and filtered columns are indexed.

(B) Partitioning large tables into smaller, more manageable partitions based on specific criteria. Thus it results in more efficient querying, maintenance, and data loading operations, as only the relevant partitions need to be accessed or processed.

(C) Denormalization and Materialized Views:
– Denormalizing data by pre-joining or pre-aggregating frequently queried data can reduce the need for complex joins and aggregations at query time, improving performance.
– Creating materialized views, which are pre-computed query results, can significantly speed up queries that involve complex calculations or aggregations

(D) Query Optimization:
– Analyze and optimize complex queries by rewriting them or breaking them down into smaller, more efficient sub-queries.
– Leverage database-specific query optimization features.

(E) Caching:
– Implement caching mechanisms to store the results of frequently executed queries
– Using In-memory caching.

(F) Data Compression:
– Compressing data can reduce the amount of data that needs to be read from disk, improving query performance.
– Many databases/data warehouse solutions offer built-in compression algorithms also.

(G) Parallel Processing:
– Using parallel processing capabilities to distribute query execution across multiple nodes, improving performance for computationally intensive queries.

(H) Hardware Allocation:
– Allocate appropriate hardware with good CPU, memory, and I/O bandwidth, to ensure that queries have sufficient resources to execute efficiently.

(I) Data Archiving/Purging:
– Implement data lifecycle management strategies, such as archiving or purging older, less frequently accessed data, to reduce the overall data volume and improve query performance on the active data.

Tools like Ask On Data, with its simple chat interface powered by AI, can help you simply type and load the data into the data warehouse as well as do the required transformations. It can help in saving around 93% time in creating data pipelines as compared to tradition ETL tools.

If you are looking for some professional guidance you can reach out on

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