codesnips

observability

yaml 
# Prometheus configuration
global:
  scrape_interval: 15s
  evaluation_interval: 15s
  scrape_timeout: 10s

Prometheus monitoring and alerting configuration

prometheus monitoring alerting
by Ryan Nakamura 2 tabs
ruby 
class CreateAuditLogs < ActiveRecord::Migration[7.1]
  def change
    create_table :audit_logs do |t|
      t.references :auditable, polymorphic: true, null: false
      t.string :actor
      t.string :action, null: false

Audit Trail with JSON Diff (Minimal, Useful)

rails activerecord auditing
by codesnips 4 tabs
go 
package observability

import (
  "context"

  "go.opentelemetry.io/otel"

OpenTelemetry tracer provider with ratio-based sampling

go observability opentelemetry
by Leah Thompson 1 tab
go 
package middleware

import (
  "net/http"
  "sync/atomic"
)

Track in-flight requests with atomic counters

go observability concurrency
by Leah Thompson 1 tab
python 
import threading


class MinuteRingBuffer:
    def __init__(self, window_minutes=15):
        if window_minutes < 1:

Rolling Per-Minute Log Aggregation with a Ring Buffer

logging metrics observability
by codesnips 3 tabs
java 
package com.example.health;

import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import javax.sql.DataSource;

Custom Spring Boot Actuator Health Indicators for Database and Disk

spring-boot actuator health-check
by codesnips 3 tabs
go 
package observability

import (
  "context"
  "log/slog"
  "os"

Request-scoped slog logger with JSON output (Go 1.21+)

go logging observability
by Leah Thompson 1 tab
ruby 
class DeliveryObserver
  def self.delivered_email(message)
    new(message).record
  end

  def initialize(message)

Action Mailer Delivery Observability Hook

rails observability action-mailer
by codesnips 3 tabs
go 
package httpmetrics

import "github.com/prometheus/client_golang/prometheus"

var (
	httpRequestDuration = prometheus.NewHistogramVec(

HTTP Latency and Status Code Middleware with Prometheus in Go

go middleware prometheus
by codesnips 3 tabs
java 
package com.example.observability;

public final class CorrelationIdConstants {

    public static final String HEADER_NAME = "X-Correlation-Id";
    public static final String MDC_KEY = "correlationId";

Propagate a Correlation ID Through Every Log Line with an MDC Servlet Filter in Spring Boot

spring-boot logging mdc
by codesnips 4 tabs
php 
<?php

namespace App\Correlation;

final class CorrelationIdStorage
{

Propagate a Correlation ID Through Symfony Requests and Monolog Logs

symfony monolog logging
by codesnips 4 tabs
go 
package main

import (
	"log"
	"net/http"
	"time"

Instrumenting Go HTTP Handlers with Prometheus Counters and Histograms

prometheus metrics observability
by codesnips 3 tabs