AG Sistemas

Stock Quotes feed via Internet

AG Sistemas developed for Apligraf its product of stock quotes in real time via Internet.

The SmartFeeder is a product focused in the investors of the financial market who demand to receive stock quotes in real time and that possesses permanent connection the Internet, either through a broadband connection (cable or ADSL), or another kind of dedicated data link, with minimum of 64Kbps bandwidth.

It was implemented in the client-server architecture, in three layers, and its main characteristics are described below:

Server-side software (Linux e Windows Server 2003 platforms)

• Portable: wrote in C++, is immediately portable for the majority of the 32 or 64 bits *NIX platforms that uses the little-endian format.
• Modular: it can receive data feeds from diverse sources.
• Scalable: using several machines, it is possible to extend the handling capacity of distributed service.
• Keeps a database of quotes during the day (intraday).
• Allows to send to the users, in addition to the quotes itself, values already calculated with predetermined parameters (for example, IFR, MACD, etc.), news, and any another kind of desired information.

Client-side software (Linux and Win32 platforms) in two versions:

• SmartFeeder Client: connects the user’s micro directly to the Apligraf server through Internet and makes the local diffusion of the received data using DDE (Win32 platform).
• SmartFeeder Gateway: for corporative customers who owns several workstations, it connects to the Apligraf server through Internet and makes the concentration and diffusion of the data received, broadcasting it in the local IP network, so that the local workstations can use the product SmartFeeder Client without changes (for Linux and Win32 platforms).

Other product’s features:

• It crosses gateways and functions adequately through NAT.
• Using data compression and cryptography, it reduces the bandwidth consumption to the minimum indispensable.