Raw SQL Queries Entity Framework allows you to query using LINQ with your entity classes. However, there may be times that you want to run queries using raw SQL directly against the database. This includes calling stored procedures, which can be help…

原文 Executing Raw SQL Queries using Entity Framework While working with Entity Framework developers mostly use LINQ to Entities to query database. However, at times you may need to execute raw queries against the database. A common scenario is when yo…

video from youtube: http://www.youtube.com/watch?v=79NWqv3aPRI one blog post: Monitor All SQL Queries in MySQL http://www.howtogeek.com/howto/database/monitor-all-sql-queries-in-mysql/ more: Using the New MySQL Query Profiler http://web.archive.org/w…

使用MySQL执行update的时候报错:   MySQL     在使用mysql执行update的时候,如果不是用主键当where语句,会报如下错误,使用主键用于where语句中正常. 异常内容:Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column To disable safe mode, toggle t…

goaccess 是一个不错的日志分析工具,包含了json 数据同时支持基于websocket 的实时数据处理,当然我们可以通过jsonpath 的exporter 转换为支持promethues 的metrics,还是很方便的 环境准备 docker-compose 文件 version: "3" services: metrics: image: sunbird/prometheus-jsonpath-exporter volumes: - "./conf/config.…

Entity Framework Core allows you to drop down to raw SQL queries when working with a relational database. This can be useful if the query you want to perform can't be expressed using LINQ, or if using a LINQ query is resulting in inefficient SQL bein…

Error Code: 1175. You are using safe update mode and you tried to update a table without a WHERE that uses a KEY column To disable safe mode, toggle the option in Preferences -> SQL Queries and reconnect. 这是因为MySql运行在safe-updates模式下,该模式会导致非主键条件下无法执行u…

https://www.codeproject.com/Articles/43305/Tracing-SQL-Queries-in-Real-Time-for-MySQL-Databas     Assembly and MySQL Introduction One of the more interesting things for any person is to see how the internal engines from the server software work. The…

haproxy 2.0 已经发布一段时间了,提供内部直接暴露的prometheus metrics 很方便 ,可以快速的监控系统的状态 以下是一个简单的demo 环境准备 docker-compose 文件   version: "3" services: grafana: image: grafana/grafana ports: - "3000:3000" prometheus: image: prom/prometheus volumes: - ".…

Prometheus 是一个开源的监控解决方案,部署简单易使用,难点在于如何设计符合特定需求的 Metrics 去全面高效地反映系统实时状态,以助力故障问题的发现与定位.本文即基于最佳实践的 Metrics 设计方法,结合具体的场景实例--TKE 的网络组件 IPAMD 的内部监控,以个人实践经验谈一谈如何设计和实现适合的.能够更好反映系统实时状态的监控指标(Metrics).该篇内容适于 Prometheus 或相关监控系统的初学者(可无任何基础了解),以及近期有 Prometheus 监控方…