kuba/fm-dx-webserver
1
0
Fork 0
mirror of https://github.com/KubaPro010/fm-dx-webserver.git synced 2026-02-26 22:13:53 +01:00
Code Issues Activity

Add caching for spE mode switch

Browse Source 
Cache endpoint response for sporadic E TX search mode for 5 minutes to avoid excessive calls
This commit is contained in:
Adam Wisher
2024-07-14 21:10:56 +01:00
parent 993456ef47
commit d7fa74f671
1 changed files with 13 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
server/tx_search.js
View File

@@ -6,6 +6,9 @@ let cachedData = {};
let lastFetchTime = 0; let lastFetchTime = 0;
const fetchInterval = 3000; const fetchInterval = 3000;
const esSwitchCache = {"lastCheck":0, "esSwitch":false};
const esFetchInterval = 300000;
// Fetch data from maps // Fetch data from maps
function fetchTx(freq, piCode, rdsPs) { function fetchTx(freq, piCode, rdsPs) {
const now = Date.now(); const now = Date.now();
@@ -55,7 +58,7 @@ function processData(data, piCode, rdsPs) {
if (station.pi === piCode.toUpperCase() && !station.extra && station.ps && station.ps.toLowerCase().includes(rdsPs.replace(/ /g, '_').replace(/^_*(.*?)_*$/, '$1').toLowerCase())) { if (station.pi === piCode.toUpperCase() && !station.extra && station.ps && station.ps.toLowerCase().includes(rdsPs.replace(/ /g, '_').replace(/^_*(.*?)_*$/, '$1').toLowerCase())) {
const distance = haversine(serverConfig.identification.lat, serverConfig.identification.lon, city.lat, city.lon); const distance = haversine(serverConfig.identification.lat, serverConfig.identification.lon, city.lat, city.lon);
let weightDistance = distance.distanceKm let weightDistance = distance.distanceKm
if (esMode && distance.distanceKm > 200) { if (esMode && (distance.distanceKm > 200)) {
weightDistance = Math.abs(distance.distanceKm-1500); weightDistance = Math.abs(distance.distanceKm-1500);
} }
const score = (10*Math.log10(station.erp*1000)) / weightDistance; // Calculate score const score = (10*Math.log10(station.erp*1000)) / weightDistance; // Calculate score
@@ -88,10 +91,15 @@ function processData(data, piCode, rdsPs) {
} }
function checkEs() { function checkEs() {
const now = Date.now();
const url = "https://fmdx.org/includes/tools/get_muf.php"; const url = "https://fmdx.org/includes/tools/get_muf.php";
let esSwitch = false; let esSwitch = false;
fetch(url) if (now - esSwitchCache.lastCheck < esFetchInterval) {
esSwitch = esSwitchCache.esSwitch;
} else {
esSwitchCache.lastCheck = now;
fetch(url)
.then(response => response.json()) .then(response => response.json())
.then(data => { .then(data => {
if (serverConfig.identification.lon < -32) { if (serverConfig.identification.lon < -32) {
@@ -103,10 +111,13 @@ function checkEs() {
esSwitch = true; esSwitch = true;
} }
} }
esSwitchCache.esSwitch = esSwitch;
}) })
.catch(error => { .catch(error => {
console.error("Error fetching data:", error); console.error("Error fetching data:", error);
}); });
}
return esSwitch; return esSwitch;
} }