Code Explainers

Code explainers tagged #batch-processing

python 
from decimal import Decimal, ROUND_HALF_UP
 
from django.db import transaction
from django.db.models import F

Batch price updates safely in Django

decimal-precision batch-processing transactions
Advanced 8 steps
java 
@Configuration
@EnableBatchProcessing
public class CustomerImportJobConfig {
 

How a chunk-based CSV import job works in Spring

batch-processing etl csv-parsing
Intermediate 9 steps
php 
<?php
 
namespace App\Console\Commands;
 

Streaming CSV imports in Laravel

lazy-evaluation generators batch-processing
Intermediate 7 steps
ruby 
class InactiveAccountCleanup
  BATCH_SIZE = 500
  INACTIVITY_THRESHOLD = 18.months
 

Batch-processing dormant users in Rails

batch-processing activerecord service-object
Intermediate 9 steps
python 
from datetime import timedelta
 
from django.contrib.sessions.models import Session
from django.core.management.base import BaseCommand

A batched session-cleanup command in Django

management-command batch-processing database-cleanup
Intermediate 7 steps
java 
@Repository
public interface OrderRepository extends JpaRepository<Order, Long> {
 
    @QueryHints(@QueryHint(name = HINT_FETCH_SIZE, value = "1000"))

Streaming large result sets in Spring Data JPA

streaming jpa memory-management
Advanced 6 steps