large-data-volumes

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What's the best way to transfer a large dataset over an ASMX web service?

I\'ve inherited a C# .NET application which talks to a web service, and the web service talks to an Oracle database.I need to add an export function to the UI, to produce an Excel spreadsheet of some[详细]

2023-01-04 02:40 分类：问答
Need some help calculating percentile

An rpc server is given which receives millions of requests a day. Each request i takes processing time Ti to get processed. We want to find the 65th percentile processing time (when processing times a[详细]

2023-01-03 22:54 分类：问答
Getting started with massive data

I\'m a mathematician and occasionally do some statistics/machine learning analysis consulting projects on the side开发者_开发问答. The data I have access to are usually on the smaller side, at most a[详细]

2023-01-01 07:22 分类：问答
large amount of data in many text files - how to process?

I have large amounts of data (a few terabytes) and accumulating... They are contained in many tab-delimited flat text files (each about 30MB). Most of the task involves reading the data and aggregatin[详细]

2023-01-01 07:17 分类：问答
Performing Aggregate Functions on Multi-Million Row Tables

I\'m having some serious performance issues with a multi-million row table that I feel I should be able to get results from fairly quick. Here\'s a run down of what I have, how I\'m querying it, and h[详细]

2022-12-30 05:37 分类：问答
Using Hibernate's ScrollableResults to slowly read 90 million records

I simply need to read each row in a table in my MySQL database using Hibernate and write a file based on it.But there are 90 million rows and they are pretty big.So it seemed like the following would[详细]

2022-12-29 23:24 分类：问答
Fastest way for inserting very large number of records into a Table in SQL

The problem is, we have a huge number of records (more than a million) to be inserted into a single table from a Java application. The records are created by the Java code, it\'s not a move from anoth[详细]

2022-12-29 06:49 分类：问答
Large maintenance php script. How to print debug string while the script is executing?

I have a very large php maintenance script (basically it recreates thumbnails for an internal archive), it takes 10 to 20 minutes to complete and I noticed that php only displays \"echos\" when the wh[详细]

2022-12-27 15:04 分类：问答
Issue with cloning and large structure processing

My Perl script have weird behaviour which I don\'t understand. I\'m processing large structure stored as array of hashes which is growing while processing. The problem is that structure has about max[详细]

2022-12-26 13:24 分类：问答
java efficient de-duplication

Lets say you have a large text file. Each row contains an email id and some other information (say some product-id). Assume there are millions of rows in the file. You开发者_如何学运维 have to load th[详细]

2022-12-21 08:59 分类：问答