[월:] 2016년 09월

Amazon Aurora 기능 업데이트 – 병렬 미리 읽기, 고속 인덱싱 , NUMA 인식 등

2016-09-09 KENNETH 0

Amazon Aurora 기능 업데이트 – 병렬 미리 읽기, 고속 인덱싱 , NUMA 인식 등 Amazon Aurora는 현재 가장 빠르게 성장하고 있는 AWS 서비스입니다. 클라우드에 최적화된 관계형 데이터베이스 엔진으로서 Amazon Aurora – New Cost-Effective MySQL-Compatible Database Engine for Amazon RDS는 높은 성능 향상과 최대 64TB까지 원활하게 스토리지 확장 및 견고성과 가용성 향상을 실현하였습니다. Aurora을 MySQL 호환 엔진으로 디자인함으로써 고객은 기존 애플리케이션을 마이그레이션하거나 새로운 응용 프로그램 구축할 때 더욱 간단하게 접근하실 수 있습니다.오늘 추가로 세 가지 성능을 개선하는 새로운 기능을 Aurora에 추가했습니다. 각각의 기능은 AWS를 많이 이용하는 고객의 일반적인 워크로드에서 Aurora 성능을 최대로 개선하도록 설계되었습니다. 병렬 미리 읽기(Parallel Read Ahead) – 구간 선택, 전체 테이블 스캔, 테이블 변경, 인덱스 생성을 최대 5배 빠르게 성능 개선 빠른 인덱싱(Faster Index Build) – 인덱스 생성 시간을 약 75% 단축 NUMA 인식 스케줄링(NUMA-Aware Scheduling) – 두 개 이상의 CPU가 탑재 된 데이터베이스 인스턴스를 사용하는 경우, 쿼리 [ more… ]

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USN-3075-1: Imlib2 vulnerabilities

2016-09-09 KENNETH 0

USN-3075-1: Imlib2 vulnerabilities Ubuntu Security Notice USN-3075-1 8th September, 2016 imlib2 vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 16.04 LTS Ubuntu 14.04 LTS Ubuntu 12.04 LTS Summary Several security issues were fixed in Imlib2. Software description imlib2 – Image manipulation and rendering library Details Jakub Wilk discovered an out of bounds read in the GIF loaderimplementation in Imlib2. An attacker could use this to cause adenial of service (application crash) or possibly obtain sensitiveinformation. (CVE-2016-3994) Yuriy M. Kaminskiy discovered an off-by-one error when handlingcoordinates in Imlib2. An attacker could use this to cause a denial ofservice (application crash). (CVE-2016-3993) Yuriy M. Kaminskiy discovered that integer overflows existed in Imlib2when handling images with large dimensions. An attacker could usethis to cause a denial of service (memory exhaustion or applicationcrash). (CVE-2014-9771, CVE-2016-4024) Kevin Ryde discovered that [ more… ]

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USN-3074-1: File Roller vulnerability

2016-09-09 KENNETH 0

USN-3074-1: File Roller vulnerability Ubuntu Security Notice USN-3074-1 8th September, 2016 file-roller vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 16.04 LTS Ubuntu 14.04 LTS Summary File Roller could be made to delete files. Software description file-roller – archive manager for GNOME Details It was discovered that File Roller incorrectly handled symlinks. If a user weretricked into extracting a specially-crafted archive, an attacker could deletefiles outside of the extraction directory. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 16.04 LTS: file-roller 3.16.5-0ubuntu1.2 Ubuntu 14.04 LTS: file-roller 3.10.2.1-0ubuntu4.2 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In general, a standard system update will make all the necessary changes. References CVE-2016-7162, LP: 1171236 Source: USN-3074-1: File Roller vulnerability

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Device to Device Communication with Azure IoT Hub

2016-09-09 KENNETH 0

Device to Device Communication with Azure IoT Hub We’ve already seen how to get your devices to send data to the cloud. In most cases, the data is then processed by various Azure services. However, in some cases the cloud is nothing more than a means of communication between two devices. Imagine a Raspberry Pi connected to a garage door. Telling the Raspberry Pi to open or close the door from a phone should only require a minimal amount of cloud programming. There is no data processing; the cloud simply relays a message from the phone to the Pi. Or perhaps the Raspberry Pi is connected to a motion sensor and you’d like an alert on your phone when it detects movement. In this blog post, we will experiment with implementing device-to-device communication with as little cloud-side programming as possible. [ more… ]

Using nginScript to Progressively Transition Clients to a New Server

2016-09-09 KENNETH 0

Using nginScript to Progressively Transition Clients to a New Server Building customized upstream selection with JavaScript code With the launch of NGINX Plus R10, we introduced a preview release of our next‑generation programmatic configuration language, nginScript. nginScript is a unique JavaScript implementation for NGINX and NGINX Plus, designed specifically for server‑side use cases and per‑request processing. One of the key benefits of nginScript is the ability to read and set NGINX configuration variables. The variables can then be used to make custom routing decisions unique to the needs of the environment. This means that you can use the power of JavaScript to implement complex functionality that directly impacts request processing. Editor – This is the fourth in a series of blog posts that explore the new features in NGINX Plus R10 in depth. This list will be expanded as later articles are published. Authenticating API Clients [ more… ]