Amazon Aurora is a relational database service for OLTP workloads offered as part of Amazon Web Services (AWS). In this paper, we describe the architecture of Aurora and the design considerations leading to that architecture. We believe the central constraint in high throughput data processing has moved from compute and storage to the network. Aurora brings a novel architecture to the relational database to address this constraint, most notably by pushing redo processing to a multi-tenant scale- out storage service, purpose-built for Aurora. We describe how doing so not only reduces network traffic, but also allows for fast crash recovery, failovers to replicas without loss of data, and fault-tolerant, self-healing storage. We then describe how Aurora achieves consensus on durable state across numerous storage nodes using an efficient asynchronous scheme, avoiding expensive and chatty recovery protocols. Finally, having operated Aurora as a production service for over 18 months, we share lessons we have learned from our customers on what modern cloud applications expect from their database tier.
This talk investigates fake science factories; international twilight companies whose sole purpose is to give studies an air of scientific credibility while cashing in on millions of dollars in the process.
The principal–agent problem, in political science and economics, occurs when one person or entity (the "agent") is able to make decisions and/or take actions on behalf of, or that impact, another person or entity (the "principal")
PostgreSQL is the database management system that gained more popularity in our DB-Engines Ranking within the last year than any of the other 343 monitored systems.
We thus declare PostgreSQL as the DBMS of the Year 2018.
In this results book, we would like to present this out- standing research, publishing more than 110 reports on projects carried out in 2016 and 20171. Our “TOP 5” pro- jects in terms of allocated core-hours consumed 17% of the total available core-hours on SuperMUC in this time- frame and merit special mention:
Astrophysics: Janka et al. performed longtime 3D su- pernova simulations (page 32)
Computational Fluid Dynamics and Engineering: Lohse et al. performed simulations on thermal turbulence at extreme Rayleigh numbers (page 108)
High Energy Physics: Jansen et al. studied nucleon ob- servables as probes for physics beyond the standard model (page 202)
Earth, Climate and Environmental Sciences: Ludwig et al. research climate change and hydrological extremes (page 185)
Astrophysics: Dietrich et al. investigated binary neu- tron star mergers (page 18)
In UGC video verification, one potential important piece of information is the video origin. This service is able to identify logos in videos, drawing from a large number of sources of TV channels, independent media organizations, and informal groups such as militant organizations participating in the Syrian civil war. The service aims to assist investigators by automatically detecting the logo and providing the users with information about it, such as the name of the organization and the corresponding Wikipedia page. Thus, the investigator may be aware of the video provenance, and be aware of potential biases or manipulation of the truth. The logo dataset is expandable, allowing investigators to submit new logos and associated information for inclusion in the system. Press "Known Logos" to see the list of recognizable templates, try out the logo examples below, or submit a new logo to the dataset.
Facebook Graph Search is a powerful search engine that lets everyone play around with Facebooks "big data". It only shows you what is already accessible to you (at least that's what Facebook claims), but in a structured and simple way that has been met by a lot of concerns about privacy. Especially since it can reveal things you might not think you had access to.
OSINT framework focused on gathering information from free tools or resources. The intention is to help people find free OSINT resources. Some of the sites included might require registration or offer more data for $$$, but you should be able to get at least a portion of the available information for no cost.