Columnar-Databases 
High Scalability
JANUARY 11, 2022
We will use a graph database such as Neo4j to store the information. Additionally, we can use columnar databases like Cassandra to store information like user feeds, activities, and counters. After that, the post gets added to the feed of all the followers in the columnar data storage. System Components. Component Design.
Percona
DECEMBER 14, 2022
I was pretty optimistic that I’d truly have impressive numbers to share but as it turns out, while there is a potential for significant advantage, a detailed testing regime of the CITUS columnar store extension should be carried out before implementing them into your own environment. About columnar tables. The missing sizzle.
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Percona
DECEMBER 18, 2023
These days, there’s been a lot of talk in the industry about setting up one’s database system on PostgreSQL. It can perform ETL transforms from one database to another and, under certain special circumstances, can even be implemented as a poor man’s replication solution. MYSQL: OS: Ubuntu 16.04 MySQL version 5.7
Percona
NOVEMBER 3, 2023
Rather than listing the concepts, function calls, etc, available in Citus, which frankly is a bit boring, I’m going to explore scaling out a database system starting with a single host. Rebalancing the shards across the two nodes. select citus_add_node('citus2', 5432); qecho rebalancing shards across TWO nodes.
The Morning Paper
SEPTEMBER 10, 2019
Procella agressively caches metadata, columnar file headers, and columnar data (using a newly developed data format, Artus, that gives data the same representation on disk and in memory). Given sufficient memory, Procella can essentially become an in-memory database. Heavily optimise and pre-compute data formats.
Percona Community
AUGUST 2, 2018
ClickHouse ClickHouse is an open-source column-oriented DBMS (columnar database management system) for online analytical processing. In this post, I provide an illustration of how to use Pentaho Data Integration (PDI) tool to set up external dictionaries in MySQL to support ClickHouse. Source: wiki.
The Morning Paper
DECEMBER 5, 2019
While a database is barely getting started at 20,000 rows, a spreadsheet could be hanging. What learnings from the database community could help improve spreadsheet performance? Many ideas from databases could potentially be employed to make spreadsheets more scalable. Towards faster spreadsheets.
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