diff --git a/server/model/monitor.js b/server/model/monitor.js
index ec40115c12..e407e5a2d8 100644
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@@ -3,7 +3,7 @@ const dayjs = require("dayjs");
 const axios = require("axios");
 const { Prometheus } = require("../prometheus");
 const { log, UP, DOWN, PENDING, MAINTENANCE, flipStatus, TimeLogger, MAX_INTERVAL_SECOND, MIN_INTERVAL_SECOND,
-    SQL_DATETIME_FORMAT, isDev, sleep, getRandomInt
+    SQL_DATETIME_FORMAT
 } = require("../../src/util");
 const { tcping, ping, dnsResolve, checkCertificate, checkStatusCode, getTotalClientInRoom, setting, mssqlQuery, postgresQuery, mysqlQuery, mqttAsync, setSetting, httpNtlm, radius, grpcQuery,
     redisPingAsync, mongodbPing, kafkaProducerAsync, getOidcTokenClientCredentials, rootCertificatesFingerprints, axiosAbortSignal
@@ -329,16 +329,6 @@ class Monitor extends BeanModel {
                 }
             }
 
-            // Evil
-            if (isDev) {
-                if (process.env.EVIL_RANDOM_MONITOR_SLEEP === "SURE") {
-                    if (getRandomInt(0, 100) === 0) {
-                        log.debug("evil", `[${this.name}] Evil mode: Random sleep: ` + beatInterval * 10000);
-                        await sleep(beatInterval * 10000);
-                    }
-                }
-            }
-
             // Expose here for prometheus update
             // undefined if not https
             let tlsInfo = undefined;
@@ -1024,7 +1014,6 @@ class Monitor extends BeanModel {
             if (! this.isStop) {
                 log.debug("monitor", `[${this.name}] SetTimeout for next check.`);
                 this.heartbeatInterval = setTimeout(safeBeat, beatInterval * 1000);
-                this.lastScheduleBeatTime = dayjs();
             } else {
                 log.info("monitor", `[${this.name}] isStop = true, no next check.`);
             }
@@ -1034,9 +1023,7 @@ class Monitor extends BeanModel {
         /** Get a heartbeat and handle errors */
         const safeBeat = async () => {
             try {
-                this.lastStartBeatTime = dayjs();
                 await beat();
-                this.lastEndBeatTime = dayjs();
             } catch (e) {
                 console.trace(e);
                 UptimeKumaServer.errorLog(e, false);
@@ -1045,9 +1032,6 @@ class Monitor extends BeanModel {
                 if (! this.isStop) {
                     log.info("monitor", "Try to restart the monitor");
                     this.heartbeatInterval = setTimeout(safeBeat, this.interval * 1000);
-                    this.lastScheduleBeatTime = dayjs();
-                } else {
-                    log.info("monitor", "isStop = true, no next check.");
                 }
             }
         };
diff --git a/server/uptime-kuma-server.js b/server/uptime-kuma-server.js
index 6b1d3d0105..6acc8d4df7 100644
--- a/server/uptime-kuma-server.js
+++ b/server/uptime-kuma-server.js
@@ -12,7 +12,6 @@ const { Settings } = require("./settings");
 const dayjs = require("dayjs");
 const childProcess = require("child_process");
 const path = require("path");
-const axios = require("axios");
 // DO NOT IMPORT HERE IF THE MODULES USED `UptimeKumaServer.getInstance()`, put at the bottom of this file instead.
 
 /**
@@ -63,8 +62,6 @@ class UptimeKumaServer {
      */
     jwtSecret = null;
 
-    checkMonitorsInterval = null;
-
     static getInstance(args) {
         if (UptimeKumaServer.instance == null) {
             UptimeKumaServer.instance = new UptimeKumaServer(args);
@@ -78,9 +75,6 @@ class UptimeKumaServer {
         const sslCert = args["ssl-cert"] || process.env.UPTIME_KUMA_SSL_CERT || process.env.SSL_CERT || undefined;
         const sslKeyPassphrase = args["ssl-key-passphrase"] || process.env.UPTIME_KUMA_SSL_KEY_PASSPHRASE || process.env.SSL_KEY_PASSPHRASE || undefined;
 
-        // Set default axios timeout to 5 minutes instead of infinity
-        axios.defaults.timeout = 300 * 1000;
-
         log.info("server", "Creating express and socket.io instance");
         this.app = express();
         if (sslKey && sslCert) {
@@ -352,10 +346,6 @@ class UptimeKumaServer {
         if (enable || enable === null) {
             this.startNSCDServices();
         }
-
-        this.checkMonitorsInterval = setInterval(() => {
-            this.checkMonitors();
-        }, 60 * 1000);
     }
 
     /**
@@ -368,8 +358,6 @@ class UptimeKumaServer {
         if (enable || enable === null) {
             this.stopNSCDServices();
         }
-
-        clearInterval(this.checkMonitorsInterval);
     }
 
     /**
@@ -400,83 +388,6 @@ class UptimeKumaServer {
             }
         }
     }
-
-    /**
-     * Start the specified monitor
-     * @param {number} monitorID ID of monitor to start
-     * @returns {Promise<void>}
-     */
-    async startMonitor(monitorID) {
-        log.info("manage", `Resume Monitor: ${monitorID} by server`);
-
-        await R.exec("UPDATE monitor SET active = 1 WHERE id = ?", [
-            monitorID,
-        ]);
-
-        let monitor = await R.findOne("monitor", " id = ? ", [
-            monitorID,
-        ]);
-
-        if (monitor.id in this.monitorList) {
-            this.monitorList[monitor.id].stop();
-        }
-
-        this.monitorList[monitor.id] = monitor;
-        monitor.start(this.io);
-    }
-
-    /**
-     * Restart a given monitor
-     * @param {number} monitorID ID of monitor to start
-     * @returns {Promise<void>}
-     */
-    async restartMonitor(monitorID) {
-        return await this.startMonitor(monitorID);
-    }
-
-    /**
-     * Check if monitors are running properly
-     */
-    async checkMonitors() {
-        log.debug("monitor_checker", "Checking monitors");
-
-        for (let monitorID in this.monitorList) {
-            let monitor = this.monitorList[monitorID];
-
-            // Not for push monitor
-            if (monitor.type === "push") {
-                continue;
-            }
-
-            if (!monitor.active) {
-                continue;
-            }
-
-            // Check the lastStartBeatTime, if it is too long, then restart
-            if (monitor.lastScheduleBeatTime ) {
-                let diff = dayjs().diff(monitor.lastStartBeatTime, "second");
-
-                if (diff > monitor.interval * 1.5) {
-                    log.error("monitor_checker", `Monitor Interval: ${monitor.interval} Monitor ` + monitorID + " lastStartBeatTime diff: " + diff);
-                    log.error("monitor_checker", "Unexpected error: Monitor " + monitorID + " is struck for unknown reason");
-                    log.error("monitor_checker", "Last start beat time: " + R.isoDateTime(monitor.lastStartBeatTime));
-                    log.error("monitor_checker", "Last end beat time: " + R.isoDateTime(monitor.lastEndBeatTime));
-                    log.error("monitor_checker", "Last ScheduleBeatTime: " + R.isoDateTime(monitor.lastScheduleBeatTime));
-
-                    // Restart
-                    log.error("monitor_checker", `Restarting monitor ${monitorID} automatically now`);
-                    this.restartMonitor(monitorID);
-                } else {
-                    //log.debug("monitor_checker", "Monitor " + monitorID + " is running normally");
-                }
-            } else {
-                //log.debug("monitor_checker", "Monitor " + monitorID + " is not started yet, skipp");
-            }
-
-        }
-
-        log.debug("monitor_checker", "Checking monitors end");
-    }
 }
 
 module.exports = {