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# Problem to solve
Be able to view or calculate historical arrival delays at a stop for a particular trip.
# Challenges
1. TFI api does not provide the data I expect and need
2. Storage and quer…
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## Make distributed time-series database based on libp2p to decrease space complexity
### Problem
- reference : #165
- full-copy database의 경우 query의 성능이 뛰어나나 space complexity가 높으므로 분산 저장이 필요함
…
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We have encountered problems on a large amount of data. We tried to parse the query that Qryn makes and we had some questions
SQL query:
```
explain indexes = 1 WITH sel_a AS (select `samples`.`s…
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After setting up the game running on a host running PHP 5.6.22, I realized that the mysql_connect() and related functions were deprecated some time ago, and removed during the 5.6 series, and yet the …
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snabb gained yang based configuration and state information via [snabb config](https://github.com/snabbco/snabb/tree/master/src/program/config). Counters are nicely exposed via [snabb config get-state…
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### Description & use-case
When analyzing relational time-series data, it is essential to have the ability to join multiple datasets using time dimension by looking up at the value being closest in…
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DCAT 3 introduced a new class for [Dataset Series](https://www.w3.org/TR/vocab-dcat-3/#dataset-series), essentially defined as a collection of datasets that have a common characteristic (both [DCA-AP]…
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### What happened?
We manage grafana alert rules in a state repository and mount alert rule provisioning files to grafana pods as configmaps. The problem we are facing, is that every time grafana is …
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## Datasets for lake statistics aggregation
### Regional Dataset
#### Jorgenson: Ecological Mapping and Permafrost Database for Northern Alaska (Final Ecological Mapping Update (2014))
[Data …
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instead of accepting a valid preparation and a series of instrument IDs and hoping they all actually line up in the database, what if we accepted as recipe creation input the ID of the preparation, an…