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Cache electrum address history fetch a couple of seconds to prevent double requests on address page load.

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This commit is contained in:
softsimon
2021-01-10 19:58:55 +07:00
parent 9a23d2c6b0
commit c4d1fad853
2 changed files with 48 additions and 1 deletions
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11
backend/src/api/bitcoin/electrum-api.ts
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@@ -11,6 +11,7 @@ import * as ElectrumClient from '@mempool/electrum-client';
import * as sha256 from 'crypto-js/sha256';
import * as hexEnc from 'crypto-js/enc-hex';
import loadingIndicators from '../loading-indicators';
import memoryCache from '../memory-cache';
class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
private electrumClient: any;
@@ -158,7 +159,15 @@ class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
}
private $getScriptHashHistory(scriptHash: string): Promise<IElectrumApi.ScriptHashHistory[]> {
return this.electrumClient.blockchainScripthash_getHistory(this.encodeScriptHash(scriptHash));
const fromCache = memoryCache.get<IElectrumApi.ScriptHashHistory[]>('Scripthash_getHistory', scriptHash);
if (fromCache) {
return Promise.resolve(fromCache);
}
return this.electrumClient.blockchainScripthash_getHistory(this.encodeScriptHash(scriptHash))
.then((history) => {
memoryCache.set('Scripthash_getHistory', scriptHash, history, 2);
return history;
});
}
private encodeScriptHash(scriptPubKey: string): string {