#request-scope code explainers

typescript

import { Injectable, Scope, Inject, NotFoundException } from '@nestjs/common';
import { REQUEST } from '@nestjs/core';
import { Request } from 'express';
import { DataSource } from 'typeorm';

Per-tenant database connections in NestJS

multi-tenancy connection-pooling dependency-injection

Advanced 8 steps

python

from flask import g, session
 
from .extensions import cache
from .models import User

Injecting the current user in Flask templates

context-processor caching authentication

Intermediate 6 steps

java

@Service
@RequiredArgsConstructor
public class ExchangeRateService {

Request-scoped rate caching in Spring

request-scope caching memoization

Advanced 6 steps

go

package middleware
 
import (
	"net/http"

Wrapping Gin requests in a DB transaction

middleware transactions error-handling

Intermediate 8 steps

typescript

import { Injectable, Scope, Inject } from '@nestjs/common';
import { REQUEST } from '@nestjs/core';
import { Request } from 'express';

Request-scoped context service in NestJS

dependency-injection request-scope immutability

Intermediate 8 steps