pev2
TypeORM
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pev2 | TypeORM | |
---|---|---|
40 | 156 | |
2,363 | 33,287 | |
3.4% | 0.9% | |
7.7 | 9.0 | |
12 days ago | 5 days ago | |
TypeScript | TypeScript | |
PostgreSQL License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
pev2
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Retrieving the latest row per group from PostgreSQL
This runs in about 250ms. Let's have a look at the explain plan to understand it better. To visualise it, I am using the excellent visualisation tool from Dalibo.
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Pg_hint_plan: Force PostgreSQL to execute query plans how you want
The PEV2 is open source and give you a good visualization. I never used this pgmustard to compare.
https://explain.dalibo.com/
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Efficient Database Queries in Rails: A Practical Approach
Visualize Your Plan: Visit explain.dalibo.com and paste the generated plan text and query. Then, hit Submit. The tool will generate a visualization of your query plan. Here's an example of the visualization for the fifth attempt version of the query from this post. It shows the different types of scans that were used and how the data gets combined. The duration of each operation is also shown:
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What's new in the Postgres 16 query planner (a.k.a. optimizer)
You can download the whole analyzer as a simple html file and use it this way. No need to obfuscate or sanitize anything at all.
https://github.com/dalibo/pev2
- Visualizing and understanding PostgreSQL EXPLAIN plans made easy
- Don't use DISTINCT as a "join-fixer"
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When should you use the IN instead of the OR operator in Postgres queries?
You might be interested in sites like https://explain.dalibo.com/ which make the output a bit nicer to read. I use these quite often to quickly identify bottlenecks.
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200 Web-Based, Must-Try Web Design and Development Tools
PostgreSQL Query Plan Analyzer and Visualizer
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Do you use pgAdmin? Why?
I didn’t know about pev2, interesting, checking it now. Did you integrate the component yourself or are you using this hosted page by them: https://explain.dalibo.com/?
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Tuning DB
IMO it‘s important to get started with indexing. Grab your most frequently used queries and run an EXPLAIN ANALYZE to identify the problems. This tool might help you to understand your execution plans. Once you identified your problems, you can build indexes and check again. Then you should regularly check if your indexes are used.
TypeORM
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NodeJS Security Best Practices
If you use Sequalize, TypeORM or for MongoDB, we have Mongoose these types of ORM tools, then you are safe by default because these help us against the SQL query injection attacks by default.
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[DDD] Tactical Design Patterns Part 3: Presentation/Infrastructure Layer
We decided to use MySQL for a database. and TypeOrm for ORM. The ER diagram is provided below. For example, the task_assignments table holds information about user assignments to tasks. While in DDD, there is a pattern to design denormalized tables that reflect the structure of domain objects more directly, but this time, a more conventional table design was chosen. TypeOrm models:
- Optimizing SQL Queries by 23x!!!
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SQLSync – Stop Building Databases
How does this compare to using directly an ORM lib that supports browser like TypeORM [0] via SQL.js [1]?
[0] https://typeorm.io/
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Deno Cron
* Patch a third-party library that was setting an HTTP header to `null`. NodeJS handles this case just fine, but Deno throws an error [2].
After all of that work, I finally was able to use Deno in my project. It was really cool! Unfortunately, both VS Code and IntelliJ with Deno are essentially unusable [3]. Or, at least, unacceptably slow compared to what I had with NodeJS.
[0]: https://stackoverflow.com/a/66073607
[1]: https://github.com/typeorm/typeorm/issues/6123#issuecomment-...
[2]: https://github.com/Sansossio/twisted/issues/97
[3]: https://github.com/denoland/vscode_deno/issues/895
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TypeORM - remove children with orphanedRowAction
TypeORM is a very convenient ORM for JS apps. We use it with NestJS and running it on NodeJS.
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Authentication part 3 using NestJS and Postgres database neon.tech
We are going to start using TypeORM as an ORM to help us interact with Postgres, but we also have an example of using Prisma in the future and everything that we have to adapt to switch the ORMs if necessary. At the end we are implementing neon.tech as a production database, right? 😉
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From Good to Great: Scaling Applications with TypeORM Optimization
TypeORM is a popular Object-Relational Mapping (ORM) library for Node.js. It provides a high-level abstraction over relational databases, making it easy to perform CRUD (Create, Read, Update, Delete) operations.
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Top 6 ORMs for Modern Node.js App Development
TypeORM places its focus on TypeScript and JavaScript (ES7+) development. It offers compatibility with various database systems, including MySQL, PostgreSQL, SQLite, and MongoDB. What sets TypeORM apart is its robust integration with TypeScript. It provides a user-friendly experience with a convenient decorator-based syntax for defining entities and relationships. Additionally, TypeORM supports the repository pattern and enables eager loading, enhancing its versatility for developers.
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Deep Dive into Google Cloud SQL Connector for Node.js
ᴬ typeorm officially supports mssql@v9, but the support for the custom stream builder was added in mssql@v10. Since mssql is a peer dependency of typeorm, you can force override it and use the Cloud SQL Connector with typeorm. There is an open PR to add support for mssql@v10 in typeorm.
What are some alternatives?
awesome-db-tools - Everything that makes working with databases easier
Sequelize - Feature-rich ORM for modern Node.js and TypeScript, it supports PostgreSQL (with JSON and JSONB support), MySQL, MariaDB, SQLite, MS SQL Server, Snowflake, Oracle DB (v6), DB2 and DB2 for IBM i.
hypopg - Hypothetical Indexes for PostgreSQL
Mongoose - MongoDB object modeling designed to work in an asynchronous environment.
pev - Postgres Explain Visualizer
Prisma - Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB
sysbench - Scriptable database and system performance benchmark
Objection.js - An SQL-friendly ORM for Node.js
yugabyte-db - YugabyteDB - the cloud native distributed SQL database for mission-critical applications.
MikroORM - TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, MariaDB, MS SQL Server, PostgreSQL and SQLite/libSQL databases.
octosql - OctoSQL is a query tool that allows you to join, analyse and transform data from multiple databases and file formats using SQL.
Entity Framework - EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.