Discussion Monitoring the usage of api-tools using EDDN as an indicator

wolverine2710

Tutorial & Guide Writer
Originally posted in the "Open Letter to Frontier Developments" thread which means the dates don't quite match. I've edited it a bit. Today the 12th of January its exactly one week after the 5th of January 2016 when Zac Antonaci, Head of Community Management of Frontier Developments, created a post in the open letter thread. Where he said that the use the iPhone companion app api is LEGAL. Source. Tools which use the api are for example EDMC, EDAPI and EDCE, all can be found on EDCodex. The information is optionally distributed by EDDN. A LOT of (trading) tools use those the information retrieved by those tools.

EDDN is a good indicator of the usage of those tools. I say indicator because when tools using the api are used for internal use and do not send data to EDDN we can't monitor them. I decided to check the EDDN-monitor to see if anything has changed. A screenshot is in the spoiler tags.

attachment.php

If you look at the stats you will notice that the number of messages send to and distributed by EDDN has not changed since last week. After the release of Horizons the usage of EDDN has certainly increased. The first few days show a very deep decline but that was because after the update the api stopped working for a few days. The last weeks show a remarkable similar pattern - high peaks in the weekend. There is NO increase since the 5th of January. At peak times approx 6K market data messages are being distributed. Which means 250 per hour and approx 4.16 per minute. 0,0694444444444444 per second.

To put this in perspective. Two popular tools are EDDB and Maddavo's Market Share (MMS) which are both connected to EDDN. Some stats.
EDDB: Systems with stations:19,066. Total stations: 44,988. Stations with prices supplied by EDDN: 27,456
MMS: Database currently holds 45016 Stations in 19020 Systems, 26305 Commodities Markets in 13304 Systems

Which means that for EDDB approx 61% of the station have market data.
Which means that for MMS approx 58% of the stations have market data.

Note: Horizons introduced a lot of new planetary stations with a market. I've this feeling a lot of those prices are not distributed/shared (yet).

For those 26-27K stations for which market data exists (out of 45K stations) it would take approx 4,3 days before each and every stations gets refreshed on average. That is unless I've made a mistake somewhere. If so feel free to correct me and I will edit this post.

The purpose of this thread is NOT meant to start a (renewed) discussion about trading tools and their effectiveness, influence on the market. I thought it would be good to put things in perspective.

I will try to update this thread on a weekly base to see if things have changed. The creation of this API-subforum by Frontier Developments on the 18th of January could for example by of influence.
 
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wolverine2710

Tutorial & Guide Writer
Status: Tuesday the nineteenth of January 2016.

For starters a new screenshot. Tuesday the nineteenth of January 2016.

Screenshot: See spoiler.
EDDN-monitor-20160119.jpg

If you compare the screenshot from last week and this week, you see the same weekday/weekend cycle BUT the number of data send to and distributed by EDDN has decreased - quite a bit. No explanation. I'm hoping that this new sub-forum will bring some new commanders and more data to the table.

Two popular tools are EDDB and Maddavo's Market Share (MMS) which are both connected to EDDN. Some stats.

Last week - 20160112
EDDB: Systems with stations:19,066. Total stations: 44,988. Stations with prices supplied by EDDN: 27,456
MMS: Database currently holds 45016 Stations in 19020 Systems, 26305 Commodities Markets in 13304 Systems

This week - 20160119
EDDB: Systems with stations:19,075. Total stations: 45,882. Stations with prices supplied by EDDN: 28,248
MMS: Database currently holds 45955 Stations in 19021 Systems, 27253 Commodities Markets in 13485 Systems

A very slight increase in data with stations.

To end this post, a couple of nice tools which monitor/visualize EDDN data distribution.

 
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