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2
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1answer
25 views

How do you generate large OLTP and reporting workloads?

My current skillset lies towards plain vanilla data warehousing, with < 20k users, our setups are rather simple.. I am looking for ways to enhance my technical skills, however, as much theory as I ...
1
vote
1answer
28 views

Are there any inherently non-partitionable datasets?

Are there any practical datasets that, by their nature, cannot be partitioned in any practical way? I am wondering about this because such datasets would be ill-suited to scaling out on commodity ...
1
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1answer
293 views

optimizing MySQL for traffic analytics system

background : I've developed a URL shortener system like Bitly with same features , so the system also tracks clickers info and represent as graphs to the person who has shorten the link as ...
3
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0answers
230 views

SQL Server 2008 R2 - Merge Replication - Can the Distribution Database size cause replication problems?

Setup: We have a SQL Server 2008 R2 instance running on a central server. The server is a merge-replication publisher. We have 'N' subsribers running SQL Server 2008 Express. 'N' can grow to any ...
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0answers
107 views

PostgreSQL how to create a scalable location-based query

I need suggestions because I am not good enough. I have a DB in PostgreSQL that runs on AWS (Amazon Web Services). I have a table "user_location" where there are stored the locations of each user ...
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0answers
22 views

How to figure out how to split a table using the proper scheme

If you have a big table that you want to partition and you have 2 candidates as the partitioning key (in the sense that 50% of the queries use one column and 50% of the queries use the other column ...
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0answers
9 views

What is the preferred mode of replication for a MySQL Cluster?

Reading about MySQL Cluster, I'd like to know about what are the preferred models of replication. I understand that it supports asynchronous replication out of the box, but I'm not sure of how it ...
0
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0answers
29 views

Would an INNER JOIN query in a sharded relational database hit the same shard when using a compound primary key?

In this question I have asked about modulus calculation in sharded tables, this design is used: CREATE TABLE Orders (order_id INT PRIMARY KEY, ...); CREATE TABLE LineItems (order_id INT, lineitem_id ...
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0answers
21 views

Modulus calculation for compound primary keys in MySQL Cluster (and other sharded databases)

In MySQL Cluster, and generally in sharded databases, how is a compound primary key's modulus calculated? Say, for example, there are two tables that have primary keys like so: CREATE TABLE Orders ...
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0answers
36 views

Performance and maintainablity of a large MySQL table with hundreds of columns

For a project of mine I need to have a table with around 400 hundred columns of type nullable indexed VARCHAR(128), this table is going to store at least 50 million rows and has one column of type ...
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0answers
72 views

MySQL: Optimizing for large but discrete data sets

In brief: I'm developing a database that handles GTFS datasets from multiple transit agencies. Each dataset contains millions of rows in the stop_times.txt file (and thus its corresponding table). ...
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0answers
104 views

MySql Scalability, Master Slave replication a good idea? Read description please

I have a database on mysql which is scaling on daily basis and right now its on 5M records and in a month it may double itself. I have a table containing users data which is the largest one. I have ...