sqlstats | A Go library for collecting sql.DBStats in Prometheus format | SQL Database library

by dlmiddlecote Go Version: v1.0.2 License: MIT

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kandi X-RAY | sqlstats Summary

sqlstats is a Go library typically used in Database, SQL Database, Prometheus applications. sqlstats has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A Go library for collecting sql.DBStats and exporting them in Prometheus format. A sql.DB object represents a pool of zero or more underlying connections that get created and freed automatically. Connections in the pool may also be idle. There are a few settings (SetMaxOpenConns(), SetMaxIdleConns() and SetConnMaxLifetime()) that can be used to control the pool of connections. This library exposes stats about this pool in Prometheus format, to aid with understanding of the pool.

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Support

sqlstats has a low active ecosystem.

It has 119 star(s) with 4 fork(s). There are 2 watchers for this library.

It had no major release in the last 12 months.

There are 1 open issues and 2 have been closed. On average issues are closed in 86 days. There are 2 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of sqlstats is v1.0.2

Quality

sqlstats has no bugs reported.

Security

sqlstats has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

sqlstats is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

sqlstats releases are available to install and integrate.

Installation instructions are not available. Examples and code snippets are available.

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sqlstats Key Features

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sqlstats Examples and Code Snippets

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Community Discussions

Trending Discussions on sqlstats

Golang sql.DB WaitCount greater than 0 even when there are enough idle connections in the pool

How to get a count of the number of times a sql statement has executed in X hours?

Insert statement with variables failing

QUESTION

Golang sql.DB WaitCount greater than 0 even when there are enough idle connections in the pool

Asked 2021-May-23 at 21:32

I am looking at the DBStats of a web application in Golang. The metrics is exported to prometheus every 10s by sqlstats.

In the application, MaxOpenConns is set to 100, and MaxIdleConns is set to 50. And when I look into the metrics, I notice the number of open connections is stable around 50. This is expected, which means we are keeping 50 idle connections. However, the number of InUse connection is hovering between 0 and 5, and is 0 for most of the time. This is strange to me, because there is a constant inflow of traffic, and I don't expect the number of InUse connections to be 0.

Also, I notice WaitCount and MaxIdleClosed are pretty large. WaitCount means there is no idle connections left and sql.DB cannot open more connections due to MaxOpenConns limit. But from the stats above, there seems to be more than enough of headroom for sql.DB to create more connections (OpenConnections is way below MaxOpenConnections ). The big number of MaxIdleClosed also suggests sql.DB is making additional connections even when there are enough idle connections.

At the same time I am observing some driver: bad connection errors in the app and we are using MySQL.

Why does the app try to open more connections when there are enough idle connections around, and how should I tune the db param to reduce the issue?

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ANSWER

Answered 2021-May-23 at 21:32

However, the number of InUse connection is hovering between 0 and 5, and is 0 for most of the time. This is strange to me, because there is a constant inflow of traffic, and I don't expect the number of InUse connections to be 0.

It is not strange. The number of InUse connections moves like spikes. Since you get stats only at every 10s, you just don't see the spike.

Why does the app try to open more connections when there are enough idle connections around,

See https://github.com/go-sql-driver/mysql#important-settings

"db.SetMaxIdleConns() is recommended to be set same to (or greater than) db.SetMaxOpenConns(). When it is smaller than SetMaxOpenConns(), connections can be opened and closed very frequently than you expect."

and how should I tune the db param to reduce the issue?

Follow the recommendation of the go-sql-driver/mysql README. Use db.SetConnMaxLifetime(), and set db.SetMaxIdleConns() same to db.SetMaxOpenConns().

Source https://stackoverflow.com/questions/67653872

QUESTION

How to get a count of the number of times a sql statement has executed in X hours?

Asked 2019-Oct-04 at 04:41

I'm using oracle db. I want to be able to count the number of times that a SQL statement was executed in X hours. For instance, how many times has the statement Select * From ExampleTable been executed in the past 5 hours?

I tried looking in V$SQL, V$SQLSTATS, V$SQLAREA, but they only keep a record of a statement's total amount of executions. They don't store what times the individual executions occurred. Is there any view I missed, or something else that does keep track of each individual statement execution + timestamp so that I can query by which have occurred X hours ago? Thanks for the help.

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ANSWER

Answered 2019-Oct-03 at 19:54

Apologies for putting this in an answer instead of a comment (I don't have the required reputation), but I think you may be out of luck. Here is an AskTOM asking basically the same question: AskTOM. Tom says unless you are using ASH that just isn't something the database is designed to do.

Source https://stackoverflow.com/questions/58225579

QUESTION

Insert statement with variables failing

Asked 2017-Sep-09 at 21:21

new here I've come across this problem.

It doesn't seem to be able to use my id's from the two first statements in my last statements as a variable resource, so the sqlcharacter statement fails.

What do i do wrong?

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ANSWER

Answered 2017-Sep-09 at 21:21

The $sqlcharacter string looks like you've got two variables $img_id and $stats_id in there instead of ?, so I think that's why it's not binding those values.

Try changing this:

Source https://stackoverflow.com/questions/46135147

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install sqlstats

You can download it from GitHub.

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