Dapper
spec
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Dapper
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Working with Dapper/SQL-Server Framework 4.8 C#
In both samples to get all records and to get a single record works fine but there is a better way to perform the same work using NuGet package Dapper. Dapper is extremely easy to use and built with performance in mind. In the source code provided the basic operations are covered, to take things to the next level and read the information at GitHub, the following page and other code samples in the following repository.
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Working with Dapper in C#
In this article learn how to use Dapper an open-source object-relational mapping (ORM) library for .NET and .NET Core applications. Unlike many articles out there, this one will provide source code to try everything out that is shown in an easy-to-follow way by beginning with a single table then in part two of this series will work with multiple tables.
- Interceptors (new C# metaprogramming feature) to fuel DapperAOT development
- API REST C# Entity Framework y SQL
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Integration Testing Postgres Store
Dapper
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REST API using C# .NET 7 with MySql
I will be using Dapper - a simple object mapper for .Net along with MySqlConnector.
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Resources for learning minimal API using dapper in .net
Maybe the more basic approach to dapper is their documentation https://github.com/DapperLib/Dapper the readme but again most likely you not gonna understand
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SQL Connection Question
I think EF Core & EF are the successors to LINQ to SQL that you'd wanna look into, and/or Dapper if you wanna go lower.
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Dapper is die?
The main maintainers of Dapper no longer work at Stack, but they're active enough to comment on recent pull requests: https://github.com/DapperLib/Dapper/pull/1887.
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Is MSSQL Server the easiest sql database to integrate with a C# .NET application?
MarieDB and dapper https://github.com/DapperLib/Dapper
spec
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The UX of UUIDs
Can use ULID to "fix" some issues
- Ulid: Universally Unique Lexicographically Sortable Identifier
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Ask HN: Is it acceptable to use a date as a primary key for a table in Postgres?
Both ULID and UUID v7 have a time code component which can be extracted.
It would be best for indexing to store the actual value in binary, though not strictly necessary as these later UUID standards (unlike conventional UUIDs) use time code prefixes (so indexing clusters.)
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Bye Sequence, Hello UUIDv7
UUIDv7 is a nice idea, and should probably be what people use by default instead of UUIDv4.
For the curious:
* UUIDv4 are 128 bits long, 122 bits of which are random, with 6 bits used for the version. Traditionally displayed as 32 hex characters with 4 dashes, so 36 alphanumeric characters, and compatible with anything that expects a UUID.
* UUIDv7 are 128 bits long, 48 bits encode a unix timestamp with millisecond precision, 6 bits are for the version, and 74 bits are random. You're expected to display them the same as other UUIDs, and should be compatible with basically anything that expects a UUID. (Would be a very odd system that parses a UUID and throws an error because it doesn't recognise v7, but I guess it could happen, in theory?)
* ULIDs (https://github.com/ulid/spec) are 128 bits long, 48 bits encode a unix timestamp with millisecond precision, 80 bits are random. You're expected to display them in Crockford's base32, so 26 alphanumeric characters. Compatible with almost everything that expects a UUID (since they're the right length). Spec has some dumb quirks if followed literally but thankfully they mostly don't hurt things.
* KSUIDs (https://github.com/segmentio/ksuid) are 160 bits long, 32 bits encode a timestamp with second precision and a custom epoch of May 13th, 2014, and 128 bits are random. You're expected to display them in base62, so 27 alphanumeric characters. Since they're a different length, they're not compatible with UUIDs.
I quite like KSUIDs; I think base62 is a smart choice. And while the timestamp portion is a trickier question, KSUIDs use 32 bits which, with second precision (more than good enough), means they won't overflow for well over a century. Whereas UUIDv7s use 48 bits, so even with millisecond precision (not needed) they won't overflow for something like 8000 years. We can argue whether 100 years us future proof enough (I'd argue it probably is), but 8000 years is just silly. Nobody will ever generate a compliant UUIDv7 with any of the first several bits aren't 0. The only downside to KSUIDs is the length isn't UUID compatible (and arguably, that they don't devote 6 bits to a compliant UUID version).
Still feels like there's room for improvement, but for now I think I'd always pick UUIDv7 over UUIDv4 unless there's an very specific reason not to.
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50 years later, is Two-Phase Locking the best we can do?
I'd love for Postgres to adopt ULID as a first class variant of the same basic 128bit wide binary optimized column type they use for UUIDs, but I don't expect they will, while its "popular" its not likely popular enough to have support for them to maintain it in the long run... Also the smart money ahead of time would have been for the ULID spec to sacrifice a few data bits to leave the version specifying sections of the bit field layout unused in the ULID binary spec (https://github.com/ulid/spec#binary-layout-and-byte-order) for the sake of future compatibility with "proper" UUIDs... Performing one big bulk bitfield modification to a PostgreSQL column would have been much less painful than re-computing appropriate UUIDv7 (or UUIDv8s for some reason) and then having to perform a primary key update on every row in the table.
- FLaNK Stack Weekly for 12 September 2023
- You Don't Need UUID
- UUID Collision
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Type-safe, K-sortable, globally unique identifier inspired by Stripe IDs
Many people had the same idea. For example ULID https://github.com/ulid/spec is more compact and stores the time so it is lexically ordered.
- ULID: Universally Unique Lexicographically Sortable Identifier
What are some alternatives?
efcore-dapper-benchmark - A project that I have created to benchmark the read/write performance of EFCore vs Dapper
dynamodb-onetable - DynamoDB access and management for one table designs with NodeJS
Npgsql - Npgsql is the .NET data provider for PostgreSQL.
uuid6-ietf-draft - Next Generation UUID Formats
PetaPoco - Official PetaPoco, A tiny ORM-ish thing for your POCO's
kuuid - K-sortable UUID - roughly time-sortable unique id generator
Knex - A query builder for PostgreSQL, MySQL, CockroachDB, SQL Server, SQLite3 and Oracle, designed to be flexible, portable, and fun to use.
python-ksuid - A pure-Python KSUID implementation
Hasura - Blazing fast, instant realtime GraphQL APIs on your DB with fine grained access control, also trigger webhooks on database events.
ulid-lite - Generate unique, yet sortable identifiers
pg-ulid - ULID Functions for PostgreSQL
shortuuid.rb - Convert UUIDs & numbers into space efficient and URL-safe Base62 strings, or any other alphabet.