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  1. TDE (Transparent Data Encryption) in CUBRID 11

    Written by Jiwon Kim on 07/07/2021 👍Increase the level of database security by utilizing various security features of CUBRID. CUBRID 11 has enhanced security by providing the Transparent Data Encryption (henceforth, TDE) feature. So, what is TDE? TDE means transparently encrypting data from the user’s point of view. This allows users to encrypt data stored on disk with little to no application change. When a hacker hacks into an organization, the number one thing they want to steal is the important data in the database. Alternatively, there may be a situation where an employee with malicious intention inside the company logs into the database and moves all data to a storage media such as a USB.  The easiest way to protect data in these situations is to encrypt the database. TDE, a technolog...
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    Written by MinJong Kim on 12/09/2021 ABOUT QUERY CACHE With the release of CUBRID 11.0, the CUBRID DBMS supports QUERY CACHE hint. In this article, we will take some time to look at QUERY CACHE. 1. What is Query Cache? Query Cache is a DBMS feature that stores the statements together with the retrieved record set in memory using the SELECT query statement and returns the previously cached values when the identical query statement is requested. The query cache can be useful in an environment where you have tables that do not change very often and for which the server receives many identical queries. Queries using the QUERY_CACHE hint are cached in a dedicated memory area, and the results are also cached in separate disk space. Query Cache Features 1. The QUERY_CACHE hint only applies to SELE...
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  3. Preventing Sniffing by CUBRID- Packet Encryption

      Written by Youngjin Hwang on 05/11/2021   Nowadays, browsing the internet with PCs or our smartphones has become an essential part of our daily life. As a result, it is possible to peek into the data being transmitted over the Internet with malicious intent. In other words, being able to peek at the data being transmitted by someone is called sniffing.   A classic example of a sniffing attack would be intercepting the account’s id and password and causing physical damage by using the personal information of others.   To protect our database user data, CUBRID 11.0 has enhanced security by providing packet encryption (and TDE (Transparent Data Encryption) based data encryption, but that will be cover in another blog later). When packet encryption is applied, the packet is encrypted and tran...
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  4. Our Experience of Creating Large Scale Log Search System Using ElasticSearch

    Written by Lee Jae Ik on 05/01/2018 At NHN, we have a service called NELO (NHN Error Log System) to manage and search logs pushed to the system by various applications and other Web services. The search performance and functionality of NELO2, the second generation of the system, have significantly been improved through ElasticSearch. Today I would like to share our experience at NHN in deploying ElasticSearch in Log Search Systems. ElasticSearch is a distributed search engine based on Lucene developed by Shay Banon. Shay and his team have recently released the long-awaited version 0.90. Here is a link to a one-hour recorded webinar where Clinton Gormley, one of the core ElasticSearch developers, explains what's new in ElasticSearch 0.90. If you are developing a system which requires a searc...
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  5. Monitoring CUBRID through Scouter

    Written by TaeHwan Seo on 01/18/2022 CUBRID users can monitor items in CUBRID through the Scouter. It was developed based on CUBRID 11.0 version. Full features are available from CUBRID 10.2.1 Version. Scouter (Server, Client) is available from version 2.15.0, bug fixes and features will be added by participating in Scouter GitHub in the future. The latest version of Scouter (as in 2022.01.18) is Scouter 2.15.0, Multi Agent support and bug fixes are currently in the PR stage. 1. What is Scouter? Scouter is an Open Source Application Performance Management (APM), it provides monitoring function for applications and OS. Scouter Basic Configuration Scouter-provided Information ​- WAS Basic Information Response speed/profiling information for each request, number of server requests/number of re...
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