修复windows下路径的问题，添加设置项，完善翻译

hydro/model/system.ts

@@ -1,15 +1,31 @@
-import { FindOneAndUpdateOption } from 'mongodb';
+import Lru from 'lru-cache';
 import * as db from '../service/db';
 
 const coll = db.collection('system');
+const cache = new Lru({
+    maxAge: 5000,
+});
 
 export async function get(_id: string) {
+    const res = cache.get(_id);
+    if (res !== undefined) return res;
     const doc = await coll.findOne({ _id });
-    if (doc) return doc.value;
+    if (doc) {
+        cache.set(_id, doc.value);
+        return doc.value;
+    }
     return null;
 }
 
 export async function getMany(keys: string[]): Promise<any[]> {
+    const r = [];
+    let success = true;
+    for (const key of keys) {
+        const res = cache.get(key);
+        if (res !== undefined) r.push(res);
+        else success = false;
+    }
+    if (success) return r;
     const docs = await coll.find({ _id: { $in: keys } }).toArray();
     const dict = {};
     const res = [];
@@ -22,24 +38,29 @@ export async function getMany(keys: string[]): Promise<any[]> {
     return res;
 }
 
-export async function update(_id: string, operation: any, config: FindOneAndUpdateOption) {
-    await coll.findOneAndUpdate({ _id }, operation, config);
-    return get(_id);
-}
-
 export async function set(_id: string, value: any) {
-    await coll.findOneAndUpdate({ _id }, { $set: { value } }, { upsert: true });
-    return get(_id);
+    cache.set(_id, value);
+    const res = await coll.findOneAndUpdate(
+        { _id },
+        { $set: { value } },
+        { upsert: true, returnOriginal: false },
+    );
+    return res.value.value;
 }
 
-export function inc(field: string) {
-    return update(field, { $inc: { value: 1 } }, { upsert: true });
+export async function inc(_id: string) {
+    const res = await coll.findOneAndUpdate(
+        { _id },
+        { $inc: { value: 1 } },
+        { upsert: true, returnOriginal: false },
+    );
+    cache.set(_id, res.value.value);
+    return res.value.value;
 }
 
 global.Hydro.model.system = {
     get,
     getMany,
-    update,
     inc,
     set,
 };