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https://github.com/mempool/mempool.git
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Merge pull request #5969 from mempool/mononaut/fix-fee-recommendations
fix fee recommendations
This commit is contained in:
wiz
GitHub
55
backend/src/__tests__/api/fee-api.ts
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55
backend/src/__tests__/api/fee-api.ts
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@@ -0,0 +1,55 @@
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import feeApi from '../../api/fee-api';
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import { IBitcoinApi } from '../../api/bitcoin/bitcoin-api.interface';
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const feeMempoolBlocks = require('./test-data/fee-mempool-blocks.json');
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const subSatMempoolInfo: IBitcoinApi.MempoolInfo = {
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mempoolminfee: 0.000001, // 0.1 sat/vbyte
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loaded: true,
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size: 100,
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bytes: 10000,
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usage: 10000,
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total_fee: 10000,
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maxmempool: 10000,
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minrelaytxfee: 0.000001, // 0.1 sat/vbyte
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};
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const mempoolInfo: IBitcoinApi.MempoolInfo = {
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mempoolminfee: 0.00001,
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loaded: true,
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size: 100,
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bytes: 10000,
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usage: 10000,
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total_fee: 10000,
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maxmempool: 10000,
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minrelaytxfee: 0.00001,
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};
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describe('Fee API', () => {
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test('should calculate recommended fees properly for sub-sat mempool', () => {
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const fee = feeApi.calculateRecommendedFee(feeMempoolBlocks.subsat, subSatMempoolInfo);
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expect(fee.fastestFee).toBe(2);
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expect(fee.halfHourFee).toBe(1);
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expect(fee.hourFee).toBe(1);
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expect(fee.economyFee).toBe(1);
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expect(fee.minimumFee).toBe(1);
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});
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test('should calculate recommended fees properly for full but low fee mempool', () => {
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const fee = feeApi.calculateRecommendedFee(feeMempoolBlocks.lowfee, mempoolInfo);
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expect(fee.fastestFee).toBe(2);
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expect(fee.halfHourFee).toBe(2);
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expect(fee.hourFee).toBe(2);
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expect(fee.economyFee).toBe(2);
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expect(fee.minimumFee).toBe(1);
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});
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test('should calculate recommended fees properly for empty mempool', () => {
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const fee = feeApi.calculateRecommendedFee(feeMempoolBlocks.empty, mempoolInfo);
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expect(fee.fastestFee).toBe(1);
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expect(fee.halfHourFee).toBe(1);
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expect(fee.hourFee).toBe(1);
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expect(fee.economyFee).toBe(1);
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expect(fee.minimumFee).toBe(1);
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});
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});
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289
backend/src/__tests__/api/test-data/fee-mempool-blocks.json
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289
backend/src/__tests__/api/test-data/fee-mempool-blocks.json
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@@ -0,0 +1,289 @@
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{
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"subsat": [
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{
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"blockSize": 1746106,
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"blockVSize": 997953.25,
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"nTx": 3750,
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"totalFees": 1764766,
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"medianFee": 1.0023586640951265,
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"feeRange": [
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0.6082474226804123,
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0.6082474226804123,
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0.6082474226804123,
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0.6082474226804123,
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1.2076788830715532,
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3.166077738515901,
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73.61111111111111
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]
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},
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{
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"blockSize": 1809871,
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"blockVSize": 997963,
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"nTx": 4861,
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"totalFees": 588436,
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"medianFee": 0.6082474226804123,
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"feeRange": [
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0.5156626506024097,
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0.5649475055559813,
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0.5670103092783505,
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0.6082474226804123,
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0.6082474226804123,
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0.6082474226804123,
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0.6082474226804123
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]
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},
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{
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"blockSize": 2917870,
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"blockVSize": 997821.25,
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"nTx": 1221,
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"totalFees": 535389,
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"medianFee": 0.5200034509958588,
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"feeRange": [
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0.35051546391752575,
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0.5649475055559813,
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0.5649475055559813,
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0.5649475055559813,
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0.5649475055559813,
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0.5649475055559813,
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0.5649475055559813
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]
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},
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{
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"blockSize": 3937966,
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"blockVSize": 997875.25,
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"nTx": 18,
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"totalFees": 506205,
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"medianFee": 0.5100003123470801,
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"feeRange": [
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.5099980684971892,
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0.5100003123470801,
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0.5100020185186144,
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0.5100025244589157
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]
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},
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{
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"blockSize": 3917639,
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"blockVSize": 997810.25,
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"nTx": 62,
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"totalFees": 503529,
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"medianFee": 0.5099975959779666,
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"feeRange": [
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.5099971889756266,
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0.5100002265056967
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]
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},
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{
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"blockSize": 3694897,
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"blockVSize": 997893.25,
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"nTx": 43,
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"totalFees": 503307,
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"medianFee": 0.5099952023028946,
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"feeRange": [
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.3704911425797351,
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0.5099952023028946,
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0.5099967157103613
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]
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},
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{
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"blockSize": 2486759,
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"blockVSize": 997857.5,
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"nTx": 498,
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"totalFees": 386911,
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"medianFee": 0.36001120750903104,
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"feeRange": [
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.5000054632270189
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]
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},
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{
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"blockSize": 6681226,
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"blockVSize": 3385616.5,
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"nTx": 10222,
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"totalFees": 1197838,
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"medianFee": 0.35051546391752575,
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"feeRange": [
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0.21576460085542437,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.35051546391752575,
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0.3599967979827291,
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0.3600004002561639,
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0.3600040026016911,
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0.3600040026016911,
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0.3600040026016911
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]
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}
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],
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"empty": [{
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"blockSize": 10000,
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"blockVSize": 10000,
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"nTx": 2000,
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"totalFees": 1197838,
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"medianFee": 1,
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"feeRange": [
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1,
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1,
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1,
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1,
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1,
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1,
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1
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]
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}
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],
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"lowfee": [
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{
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"blockSize": 1746106,
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"blockVSize": 997953.25,
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"nTx": 3750,
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"totalFees": 1764766,
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"medianFee": 1.0023586640951265,
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"feeRange": [
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1.6082474226804123,
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1.6082474226804123,
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1.6082474226804123,
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1.6082474226804123,
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1.2076788830715532,
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3.166077738515901,
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73.61111111111111
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]
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},
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{
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"blockSize": 1809871,
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"blockVSize": 997963,
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"nTx": 4861,
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"totalFees": 588436,
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"medianFee": 1.6082474226804123,
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"feeRange": [
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1.5156626506024097,
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1.5649475055559813,
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1.5670103092783505,
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1.6082474226804123,
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1.6082474226804123,
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1.6082474226804123,
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1.6082474226804123
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]
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},
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{
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"blockSize": 2917870,
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"blockVSize": 997821.25,
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"nTx": 1221,
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"totalFees": 535389,
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"medianFee": 1.5200034509958588,
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"feeRange": [
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1.35051546391752575,
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1.5649475055559813,
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1.5649475055559813,
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1.5649475055559813,
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1.5649475055559813,
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1.5649475055559813,
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1.5649475055559813
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]
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},
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{
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"blockSize": 3937966,
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"blockVSize": 997875.25,
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"nTx": 18,
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"totalFees": 506205,
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"medianFee": 1.5100003123470801,
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"feeRange": [
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.5099980684971892,
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1.5100003123470801,
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1.5100020185186144,
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1.5100025244589157
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]
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},
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{
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"blockSize": 3917639,
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"blockVSize": 997811.25,
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"nTx": 62,
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"totalFees": 503529,
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"medianFee": 1.5099975959779666,
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"feeRange": [
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.5099971889756266,
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1.5100002265056967
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]
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},
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{
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"blockSize": 3694897,
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"blockVSize": 997893.25,
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"nTx": 43,
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"totalFees": 503307,
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"medianFee": 1.5099952023028946,
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"feeRange": [
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.3704911425797351,
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1.5099952023028946,
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1.5099967157103613
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]
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},
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{
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"blockSize": 2486759,
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"blockVSize": 997857.5,
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"nTx": 498,
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"totalFees": 386911,
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"medianFee": 1.36001120750903104,
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"feeRange": [
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.5000054632270189
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]
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},
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{
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"blockSize": 6681226,
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"blockVSize": 3385616.5,
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"nTx": 10222,
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"totalFees": 1197838,
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"medianFee": 1.35051546391752575,
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"feeRange": [
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1.21576460085542437,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.35051546391752575,
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1.3599967979827291,
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1.3600004002561639,
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1.3600040026016911,
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1.3600040026016911,
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1.3600040026016911
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]
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}
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]
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}
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@@ -1,4 +1,5 @@
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import { MempoolBlock } from '../mempool.interfaces';
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import { IBitcoinApi } from './bitcoin/bitcoin-api.interface';
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import config from '../config';
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import mempool from './mempool';
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import projectedBlocks from './mempool-blocks';
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@@ -22,6 +23,11 @@ class FeeApi {
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public getRecommendedFee(): RecommendedFees {
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const pBlocks = projectedBlocks.getMempoolBlocks();
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const mPool = mempool.getMempoolInfo();
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return this.calculateRecommendedFee(pBlocks, mPool);
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}
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public calculateRecommendedFee(pBlocks: MempoolBlock[], mPool: IBitcoinApi.MempoolInfo): RecommendedFees {
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const minimumFee = this.roundUpToNearest(mPool.mempoolminfee * 100000, this.minimumIncrement);
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const defaultMinFee = Math.max(minimumFee, this.defaultFee);
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@@ -64,7 +70,7 @@ class FeeApi {
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private optimizeMedianFee(pBlock: MempoolBlock, nextBlock: MempoolBlock | undefined, previousFee?: number): number {
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const useFee = previousFee ? (pBlock.medianFee + previousFee) / 2 : pBlock.medianFee;
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if (pBlock.blockVSize <= 500000) {
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if (pBlock.blockVSize <= 500000 || pBlock.medianFee < 1) {
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return this.defaultFee;
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}
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if (pBlock.blockVSize <= 950000 && !nextBlock) {
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