codesnips

observability

ruby 
class ExternalApiClient
  def fetch_user_data(user_id)
    ActiveSupport::Notifications.instrument(
      'api.external_service',
      service: 'user_service',
      operation: 'fetch_user',

API monitoring with custom instrumentation

rails observability monitoring
by Alex Kumar 2 tabs
typescript 
import { AsyncLocalStorage } from 'node:async_hooks';

interface Store {
  requestId: string;
}

Propagate a Request ID Through NestJS Logs with AsyncLocalStorage

nestjs logging middleware
by codesnips 4 tabs
ruby 
AuditLog.create!(
  actor_id: current_user.id,
  action: 'member.approve',
  target_type: 'Member',
  target_id: member.id,
  ip_address: request.remote_ip,

Structured audit logging for privileged actions

audit-logging siem observability
by Kai Nakamura 1 tab
sql 
-- Connection statistics
SELECT
  count(*) AS total_connections,
  count(*) FILTER (WHERE state = 'active') AS active,
  count(*) FILTER (WHERE state = 'idle') AS idle,
  count(*) FILTER (WHERE state = 'idle in transaction') AS idle_in_tx,

Database observability and monitoring metrics

database monitoring observability
by Maria Garcia 2 tabs
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
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 main

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

Instrumenting Go HTTP Handlers with Prometheus Counters and Histograms

prometheus metrics observability
by codesnips 3 tabs
go 
package observability

import (
  "time"

  "go.uber.org/zap"

Sampling logs to reduce noise during high-QPS incidents

go logging observability
by Leah Thompson 1 tab