optimizations

src/ORM/client/client.service.ts

@@ -17,10 +17,25 @@ export class ClientService {
 
     }
 
-    public async save(client: Partial<ClientEntity>) {
+    // public async killDeadClients(){
-        return await this.clientRepository.save(client);
+    //     var tenMinutes = new Date(new Date().getTime() - (60 * 60 * 1000));
+
+    //     return await this.clientRepository.update({
+    //          deletedAt: IsNull(),
+    //          updatedAt: LessThan(tenMinutes)
+    //     }, {
+    //         deletedAt: new Date()
+    //     });
+    // }
+
+    public async heartbeat(address: string, clientName: string, sessionId: string) {
+        return await this.clientRepository.update({ address, clientName, sessionId }, { deletedAt: null, updatedAt: new Date() });
     }
 
+    // public async save(client: Partial<ClientEntity>) {
+    //     return await this.clientRepository.save(client);
+    // }
+
     public async insert(partialClient: Partial<ClientEntity>): Promise<ClientEntity> {
         const insertResult = await this.clientRepository.insert(partialClient);
 

src/app.module.ts

@@ -39,7 +39,8 @@ const ORMModules = [
             autoLoadEntities: true,
             cache: true,
             logging: false,
-            enableWAL: true
+            enableWAL: true,
+            busyTimeout: 30 * 1000,
         }),
         CacheModule.register(),
         ScheduleModule.forRoot(),

src/models/StratumV1Client.ts

@@ -75,7 +75,7 @@ export class StratumV1Client extends EasyUnsubscribe {
         });
 
         this.sessionStart = new Date();
-        this.statistics = new StratumV1ClientStatistics(this.clientStatisticsService);
+        this.statistics = new StratumV1ClientStatistics(this.clientStatisticsService, this.clientService);
         this.extraNonceAndSessionId = this.getRandomHexString();
         console.log(`New client ID: : ${this.extraNonceAndSessionId}`);
     }
@@ -349,8 +349,11 @@ export class StratumV1Client extends EasyUnsubscribe {
 
         this.stratumV1JobsService.addJob(job);
 
-
+        try {
             await this.promiseSocket.write(job.response(jobTemplate));
+        } catch (e) {
+            console.log(e);
+        }
 
 
         console.log(`Sent new job to ${this.clientAuthorization.worker}.${this.extraNonceAndSessionId}. (clearJobs: ${jobTemplate.blockData.clearJobs}, fee?: ${!noFee})`)

src/models/StratumV1ClientStatistics.ts

@@ -1,5 +1,6 @@
 import { ClientStatisticsService } from '../ORM/client-statistics/client-statistics.service';
 import { ClientEntity } from '../ORM/client/client.entity';
+import { ClientService } from '../ORM/client/client.service';
 
 const CACHE_SIZE = 30;
 const TARGET_SUBMISSION_PER_SECOND = 10;
@@ -9,7 +10,10 @@ export class StratumV1ClientStatistics {
     private submissionCacheStart: Date;
     private submissionCache = [];
 
-    constructor(private readonly clientStatisticsService: ClientStatisticsService) {
+    constructor(
+        private readonly clientStatisticsService: ClientStatisticsService,
+        private readonly clientService: ClientService
+    ) {
         this.submissionCacheStart = new Date();
     }
 
@@ -38,6 +42,9 @@ export class StratumV1ClientStatistics {
             submissionHash
         });
 
+        await this.clientService.heartbeat(client.address, client.clientName, client.sessionId)
+
+
     }
     public getLastSubmissionTime(): Date | null {
         return this.submissionCache[this.submissionCache.length - 1]?.time;

src/services/app.service.ts

@@ -17,8 +17,13 @@ export class AppService implements OnModuleInit {
     }
 
     async onModuleInit() {
+        //https://phiresky.github.io/blog/2020/sqlite-performance-tuning/
         //100 MB DB cache
-        await this.dataSource.query(`PRAGMA cache_size = -100000`);
+        await this.dataSource.query(`PRAGMA cache_size = -100000;`);
+        //Normal is still completely corruption safe in WAL mode, and means only WAL checkpoints have to wait for FSYNC. 
+        await this.dataSource.query(`PRAGMA synchronous = normal;`);
+        //1Gb
+        await this.dataSource.query(`PRAGMA mmap_size = 1000000000;`);
     }
 
     @Cron(CronExpression.EVERY_HOUR)
@@ -30,4 +35,12 @@ export class AppService implements OnModuleInit {
             console.log(`Deleted ${deletedClients.affected} old clients`);
         }
     }
+
+    // @Cron(CronExpression.EVERY_10_MINUTES)
+    // private async killDeadClients() {
+
+    //     if (process.env.NODE_APP_INSTANCE == null || process.env.NODE_APP_INSTANCE == '0') {
+    //         await this.clientService.killDeadClients();
+    //     }
+    // }
 }

src/services/stratum-v1.service.ts

@@ -33,9 +33,9 @@ export class StratumV1Service implements OnModuleInit {
   async onModuleInit(): Promise<void> {
 
     //await this.clientStatisticsService.deleteAll();
-    if (process.env.NODE_APP_INSTANCE == null || process.env.NODE_APP_INSTANCE == '0') {
+
     await this.clientService.deleteAll();
-    }
+
 
     this.startSocketServer();
   }
@@ -61,28 +61,27 @@ export class StratumV1Service implements OnModuleInit {
       promiseSocket.socket.on('end', async (error: Error) => {
         // Handle socket disconnection
         client.destroy();
-        promiseSocket.destroy();
+
         await this.clientService.delete(client.extraNonceAndSessionId);
 
         const clientCount = await this.clientService.connectedClientCount();
 
-
-
         console.log(`Client disconnected,  ${client.extraNonceAndSessionId},  ${clientCount} total clients`);
-
+        promiseSocket.destroy();
 
       });
 
       promiseSocket.socket.on('error', async (error: Error) => {
 
         client.destroy();
-        promiseSocket.destroy();
+
         await this.clientService.delete(client.extraNonceAndSessionId);
 
         const clientCount = await this.clientService.connectedClientCount();
         console.log(`Client disconnected, socket error,  ${client.extraNonceAndSessionId}, ${clientCount} total clients`);
 
-        console.error(error);
+        promiseSocket.destroy();
+        //console.error(error);
 
       });