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If the cardinality for a range query is very high (i.e. it matches many distinct values) the current approach is essentially a full-table scan on the inverted index. This runs very slow on large datas…
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If the bridge is the only logical thing in the room there's no point in sending messages. Some quick queries on my part show that about 20-30% of the bridge's time is spent posting to empty rooms. Man…
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Reading many files from disk in their entirety is slow. As discussed in #22 we should write some downsampled data to disk and record their locations in the SQL database. When a user queries for data w…
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Planetary has always had a piece of code that will only write a post into our SQLite database if it was created less than 6 months ago (or is a `contact` or `about` type). I assume was done as an opti…
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## What challenge are you facing?
We reference the `version_md5` in a bunch of places, and it seems to really slow down our queries.
## What would make this better?
Can we use the `version_id…
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A [recent incident](https://docs.google.com/document/d/13rmpZViQoiN4FwfEDuUs96QrQc3ay6XsJeyzWFKBbbc/edit#) with slow performing queries was caused by a regression in cohort extractor. It took a while …
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**Describe the bug**
I'm unable to set parameters such as `slow_query_log`, `long_query_time` and `log_queries_not_using_indexes` in `DbClusterParameterGroup` objects. I get an `unknown parameter` …
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Wildcard queries are pretty common but often come at a performance cost. Although the new `wildcard` data type is optimized for search speed of high cardinality fields, recent findings have shown that…
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```
The Application is significantly slow when loading large number of records. As
is anticipated the number of records is going to be even higher. Need to
optimize the queries so that records are c…
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Hello,
Is there a way to disable to the query that retrieves the aggregate count of the query?
The query starts with:
`select count(*) as aggregate from ...// rest of the parameters`
I have large …