You Are the Last to Know
Right now, if your app goes down, who finds out first? Your users. They hit a broken page, a spinning loader, or a cryptic error. Some of them email support. Most of them leave. A few post about it on X. And eventually, someone on your team sees the message and scrambles to figure out what happened.
This is the default experience for every team that ships software without monitoring in place. You are, by definition, the last to know about your own outages.
It does not matter how small your product is. If people depend on it -- even a handful of early users -- they expect it to work. And when it breaks, the gap between "it went down" and "we noticed" is where trust erodes.
The good news: setting up basic monitoring is not a weekend project. You can go from zero coverage to a reasonable setup in about ten minutes. This guide walks through each step.
Who This Guide Is For
This is written for teams that have no monitoring in place today. Maybe you are a solo founder running a SaaS product. Maybe you are a small engineering team at a startup somewhere between pre-revenue and $2M ARR. Maybe you have been meaning to set something up but never got around to it.
You do not need to be an infrastructure expert. You do not need a DevOps team. You just need a working application and ten minutes.
Step 1: Identify What to Monitor
Before you create any checks, spend two minutes making a list of the things that matter. You are not trying to monitor everything -- you are trying to monitor the things your users will notice when they break.
Start with these three categories:
Your main application. This is whatever your users interact with directly. Your marketing site, your web app, your API. If you have a single-page app backed by an API, that is two things to monitor: the frontend and the API.
Your critical endpoints. Beyond the homepage, think about the paths that matter most. The login page. The checkout flow. The dashboard that loads after authentication. The API endpoint your mobile app hits on every launch.
Your third-party dependencies. Your app probably relies on services you do not control: a payment processor, an authentication provider, a cloud hosting platform, a transactional email service. When these go down, your app breaks even though your code is fine. You need to know when that happens.
Write down 5 to 10 URLs. You can always add more later, but this starting list covers the surfaces where an outage will hurt you.
Step 2: Set Up HTTP Checks
HTTP checks are the foundation of uptime monitoring. They work by sending a request to a URL at regular intervals and verifying that the response looks correct. If it does not, you get an alert.
For each URL on your list, configure the following:
URL. The full address, including the protocol. Use https:// for anything public-facing. If you are monitoring an API health endpoint, use the exact path (e.g., https://api.yourapp.com/health).
Expected status code. For most pages, you expect a 200 OK. For an API, you might also accept 204 No Content for certain endpoints. The key is to define what "healthy" looks like so the monitor knows what "unhealthy" is.
Check interval. How often should the monitor send a request? For most early-stage products, every 60 seconds is a good starting point. It means you will know about an outage within a minute. Some tools offer 30-second intervals or shorter, but 60 seconds strikes the right balance between responsiveness and avoiding noise.
Response validation. Status codes alone are not enough. A server can return 200 OK while serving an error page or a blank response. If your monitoring tool supports it, add a keyword or content check. For a web app, verify that the response body contains a string you expect, like your product name or a specific HTML element. For an API, check that the response includes an expected field.
Failure confirmation. Configure the monitor to verify a failure from multiple locations or after multiple consecutive failures before alerting. A single failed check is often just a network blip. Two or three consecutive failures from different regions is a real outage.
Most monitoring tools, including Alert24's free tier, let you set up at least 10 HTTP checks -- more than enough to cover the essentials for a small product.
Step 3: Configure Alerts
Monitoring without alerting is just data collection. The entire point is to get notified quickly when something breaks, so configure your alert channels before you move on.
Choose your primary channel. For a small team, this usually means one of:
- Email -- works for non-urgent notifications, but easy to miss during off-hours
- Slack or Microsoft Teams -- good for team visibility; everyone sees the alert in a shared channel
- SMS or phone call -- the only reliable option for waking someone up at 3 AM
- Push notifications -- most monitoring tools have mobile apps that can push alerts to your phone
Set up at least two channels. Use a chat integration (Slack, Teams) for team-wide awareness and SMS or push notifications for the on-call person. If the alert only goes to a Slack channel and nobody is watching Slack, you have not actually improved your response time.
Define who gets notified. If you are a solo founder, this is simple -- it is you. If you have a team, decide who should get paged for production issues. Start with the people who can actually fix things. Do not send alerts to everyone; that just creates noise and shared inaction.
Set escalation rules. What happens if the first person does not acknowledge the alert within 10 minutes? The alert should escalate to someone else. Even on a two-person team, this prevents a single point of failure in your incident response.
Step 4: Create a Status Page
A status page is a public (or private) page that shows the current operational status of your services. It sounds like something only large companies need, but it solves a very practical problem for teams of any size: it reduces the support load during outages.
When your app is down, your users want to know three things: Is the team aware? What is affected? When will it be fixed? A status page answers all three without requiring anyone to send an email, open a ticket, or post on social media.
What to include on your status page:
- Your core services, listed individually. For example: "Web Application," "API," "Authentication," "Payments." This lets users see exactly what is affected.
- Current status for each service: Operational, Degraded Performance, Partial Outage, or Major Outage.
- Incident history. Even after an issue is resolved, keeping a log of past incidents builds credibility. It shows users that you take reliability seriously and that you communicate openly.
Why this matters for small products: A status page is a trust signal. When a prospective customer is evaluating your product, a status page that shows consistent uptime and transparent communication tells them you are a professional operation. It costs nothing to set up -- Alert24 and several other tools include a free status page -- and it pays dividends in reduced support tickets and increased confidence.
You can also let users subscribe to updates via email, so they are proactively notified instead of having to check the page manually.
Step 5: Set Up On-Call Basics
If you have more than one person on your team, set up an on-call rotation. This is not about building a complex schedule with multiple tiers of escalation. It is about answering a simple question: who is responsible for responding to alerts right now?
Without a rotation, one of two things happens. Either one person (usually the founder or lead engineer) gets every alert at every hour, which leads to burnout. Or alerts go to everyone, which leads to the bystander effect -- everyone assumes someone else is handling it.
For a two-person team, start simple:
- Person A is on-call Monday through Thursday
- Person B is on-call Friday through Sunday
- Alerts escalate to the other person after 10 minutes with no acknowledgment
That is it. You can get more sophisticated later -- weekly rotations, business-hours-only schedules, dedicated incident commanders. But the foundation is just: who is on the hook right now, and what happens if they do not respond?
Most on-call scheduling tools integrate directly with your monitoring, so the right person is automatically paged based on the current schedule. Set it up once and let it run.
Step 6: Add SSL Certificate Monitoring
SSL certificate expiry is one of the most common causes of outages that are entirely preventable. When your certificate expires, browsers show users a scary warning page, API clients refuse to connect, and your site is effectively down -- even though every server is running fine.
The frustrating part is that these outages are always avoidable. Certificates have known expiry dates. The fix is simple: renew before they expire. But in practice, auto-renewal fails silently, someone forgets to update a certificate on a load balancer, or a new domain gets added without configuring certificate management.
Set up SSL monitoring for every domain you own. Configure it to alert you at least 14 days before expiry. That gives you two weeks to fix any renewal issues without rushing.
Check these specifically:
- Your primary domain (yourapp.com)
- Your API domain (api.yourapp.com)
- Any custom domains your customers use, if you support vanity domains
- Subdomains used for staging or internal tools -- these expire too, and a broken staging environment slows down your whole team
SSL monitoring takes about 30 seconds per domain to set up and prevents one of the most embarrassing types of outages.
Step 7: Monitor Your Dependencies
Your application does not run in isolation. It depends on cloud infrastructure, third-party APIs, and external services. When AWS has an outage, or Stripe's API slows down, or your auth provider returns errors, your users experience it as your problem.
Common dependencies to monitor:
- Cloud providers -- AWS, Google Cloud, Azure. Most have their own status pages, but finding out from a status page that was updated 20 minutes ago is not fast enough. Monitor the specific services you use (e.g., the S3 endpoint for your region, the RDS instance your database runs on).
- Payment processors -- Stripe, PayPal, Braintree. If you cannot process payments, you are losing revenue every minute.
- Authentication providers -- Auth0, Firebase Auth, Okta. If users cannot log in, your app is effectively down for everyone.
- Email services -- SendGrid, Postmark, Mailgun. If transactional emails stop sending, password resets break, onboarding sequences stall, and receipts disappear.
- CDN and DNS providers -- Cloudflare, Fastly, Route53. These are the invisible infrastructure that keeps your app reachable.
You do not need to monitor every dependency exhaustively. Start by identifying the ones where a failure would directly impact your users, and set up HTTP checks against their health endpoints or API status URLs.
Some monitoring tools also aggregate third-party status page data, so you can see the health of your dependencies in one place. This is particularly useful during widespread outages when you need to quickly determine whether the problem is yours or upstream.
Common Pitfalls to Avoid
Setting up monitoring is the easy part. Keeping it useful is where most teams stumble. Here are the mistakes that turn a good monitoring setup into a waste of time.
Setting Up Monitoring but Ignoring Alerts
This is the most common failure mode. You set up 10 monitors, connect them to Slack, and then slowly train yourself to ignore the channel because it is noisy. Maybe you get a few false alarms, so you mute it. Maybe you see the alert but assume someone else is handling it.
The fix: treat every alert as something that requires a response. If an alert does not require action, it should not be an alert -- reconfigure the check, adjust the threshold, or remove it entirely. Every alert that fires should mean "a human needs to look at this right now."
Not Testing Your Alerting Pipeline
You set up SMS alerts, but have you actually verified that your phone rings? It sounds obvious, but misconfigured phone numbers, blocked shortcodes, expired Slack webhooks, and full email inboxes are all real reasons that alerts silently fail to reach you.
After setting up your alerts, trigger a test. Most monitoring tools let you send a test notification. Do it for every channel. Verify that the message arrives, that it contains enough context to be useful, and that the right person receives it.
Run this test again every month. Alert channels break silently, and you will not find out until the next real incident -- which is the worst possible time to discover the problem.
Monitoring the Wrong Things
It is tempting to monitor everything you can think of, but monitoring the wrong things creates noise without value. A 500ms response time on your marketing site's blog is not an outage. A background job queue that is temporarily backed up might not affect users at all.
Focus your monitoring on what your users experience directly. Can they load the app? Can they log in? Can they complete the core action your product enables? Start there, and expand coverage over time as you learn where problems actually occur.
Setting Thresholds Too Aggressively
Alerting on the first failed check with a 30-second interval means you will get false alarms from network glitches, brief deployment restarts, and transient DNS issues. Require at least two or three consecutive failures before firing an alert. A one-minute delay in notification is a worthwhile trade for avoiding alert fatigue.
Getting Started
You do not need to buy expensive tools to get started. Most monitoring platforms, including Alert24, offer free tiers that include enough monitors, a status page, and alerting to cover an early-stage product. Alert24's free tier includes 10 monitors, a status page, and alerting for one user -- no credit card required.
The specific tool matters less than the act of setting something up. Ten minutes of configuration today means the next time your app goes down, you will find out in 60 seconds instead of 60 minutes. Your users will see a status page instead of silence. And someone on your team will be on the hook to fix it, instead of waiting for a customer complaint to trickle through.
Monitoring is not a feature you ship. It is the safety net that lets you ship everything else with confidence. Set it up now, while things are quiet. You will be glad you did the next time something breaks.