This article covers how to use the reservation query feature, which automatically schedules execution in Logpresso. Learn how to learn each query pattern for data processing, such as aggregation query patterns that are mainly performed by scheduling, and how to solve problems.
🔓 for data collection and normalization Logpresso Enterprise Solutions.
Introduction to the course
Logpresso is Real-time and batch processing in one engine It is an all-in-one big data solution.
This course covers how to use the scheduled query feature in Logpresso, which automatically performs scheduling. The Logpresso batch processing course is largely divided into two parts: 1) the scheduled query feature and 2) practicing various aggregate queries that can be used in scheduled queries.
What is the reservation query function?
A scheduled query is a function that performs a set query according to a set cycle. This lecture covers the explanation of selectable options and functions such as alarms. Since the queries used in scheduled queries are mostly statistical and aggregate queries, we will cover several queries or query patterns for these.
Various query patterns and usage
In addition, since queries performed by scheduling are mainly aggregate queries, patterns of aggregate queries are also included in the course. We focus on query patterns on how to process original data into complex forms during aggregation and statistics. Aggregation queries sometimes require data processing in a specific way, and we also cover how to solve this with Logpresso queries.
In this way, the lecture is structured so that you can learn how to use various Logpresso queries while learning each query pattern.
What to prepare
PC or laptop
You will need a Windows-based PC or laptop.
Chrome based browser
Logpresso allows you to perform all queries through the web console.
It can be used without any problems in browsers that support HTML5, such as IE 11 or higher, Chrome series (Edge, Whale, etc.), Firefox, Safari, etc. (However, Chrome series is recommended.)
Tools covered in the lecture
This course uses the Logpresso Enterprise Server version.
The data used in the lectures are obtained from the web.
The course also includes how to access data from the web and process it into the format we need.
Expected Questions Q&A
Q. Where can I get the query and logpresso installation files?
All queries used in the lecture are uploaded to the Inflearn lecture notes. The installation file is included as a material in the lecture on Logpresso installation and sample data description.
Q. What do I need to attend the lecture?
This course covers batch processing including the scheduled query function, but it is a course that focuses on learning various types of aggregate queries. Therefore, it is recommended that you at least familiarize yourself with the course 'Getting Started with Logpresso' and take the course.