CHANGELOG.md

@@ -13,6 +13,13 @@ project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+## [11.5.1] - 2019-06-27
+
+### Changed
+
+- Parameter `compressCount` in Summaries to control compression of data in t-digest.
+- Compress t-digest in Summaries
+
 ## [11.5.2] - 2019-06-20
 
 ### Changed
@@ -47,7 +54,6 @@ project adheres to [Semantic Versioning](http://semver.org/).
   metrics. (#244)
 
 ### Added
-
 - Added a `remove()` method on each metric type, based on [Prometheus "Writing Client Libraries" section on labels](https://prometheus.io/docs/instrumenting/writing_clientlibs/#labels)
 
 ## [11.2.1]

index.d.ts

@@ -466,6 +466,7 @@ export interface SummaryConfiguration {
 	aggregator?: Aggregator;
 	maxAgeSeconds?: number;
 	ageBuckets?: number;
+	compressCount?: number;
 }
 
 /**

lib/summary.js

@@ -21,6 +21,8 @@ const {
 } = require('./validation');
 const timeWindowQuantiles = require('./timeWindowQuantiles');
 
+const DEFAULT_COMPRESS_COUNT = 1000; // every 1000 measurements
+
 class Summary {
 	/**
 	 * Summary
@@ -80,6 +82,8 @@ class Summary {
 		this.hashMap = {};
 		this.labelNames = config.labelNames || [];
 
+		this.compressCount = config.compressCount || DEFAULT_COMPRESS_COUNT;
+
 		if (this.labelNames.length === 0) {
 			this.hashMap = {
 				[hashObject({})]: {
@@ -262,6 +266,9 @@ function observe(labels) {
 
 		summaryOfLabel.td.push(labelValuePair.value);
 		summaryOfLabel.count++;
+		if (summaryOfLabel.count % this.compressCount === 0) {
+			summaryOfLabel.td.compress();
+		}
 		summaryOfLabel.sum += labelValuePair.value;
 		this.hashMap[hash] = summaryOfLabel;
 	};

package.json

@@ -1,92 +1,92 @@
 {
-	"name": "prom-client",
-	"version": "11.5.2",
-	"description": "Client for prometheus",
-	"main": "index.js",
-	"files": [
-		"lib/",
-		"index.js",
-		"index.d.ts"
-	],
-	"engines": {
-		"node": ">=6.1"
-	},
-	"scripts": {
-		"benchmarks": "node ./benchmarks/index.js",
-		"test": "npm run lint && npm run compile-typescript && npm run test-unit",
-		"lint": "eslint .",
-		"test-unit": "jest",
-		"compile-typescript": "tsc --project ."
-	},
-	"repository": {
-		"type": "git",
-		"url": "git@github.com:siimon/prom-client.git"
-	},
-	"keywords": [
-		"Prometheus",
-		"Metrics",
-		"Client"
-	],
-	"author": "Simon Nyberg",
-	"license": "Apache-2.0",
-	"homepage": "https://github.com/siimon/prom-client",
-	"devDependencies": {
-		"@clevernature/benchmark-regression": "^1.0.0",
-		"eslint": "^5.6.0",
-		"eslint-config-prettier": "^4.3.0",
-		"eslint-plugin-node": "^8.0.0",
-		"eslint-plugin-prettier": "^3.0.1",
-		"express": "^4.13.3",
-		"husky": "^1.3.1",
-		"jest": "^24.8.0",
-		"lint-staged": "^7.0.0",
-		"lolex": "^4.0.1",
-		"prettier": "1.17.1",
-		"typescript": "^3.0.3"
-	},
-	"dependencies": {
-		"tdigest": "^0.1.1"
-	},
-	"types": "./index.d.ts",
-	"jest": {
-		"testEnvironment": "node",
-		"testRegex": ".*Test\\.js$"
-	},
-	"lint-staged": {
-		"*.js": [
-			"eslint --fix",
-			"git add"
-		],
-		"*.{ts,md,json,yml}": [
-			"prettier --write",
-			"git add"
-		],
-		".{eslintrc,travis.yml}": [
-			"prettier --write",
-			"git add"
-		]
-	},
-	"prettier": {
-		"singleQuote": true,
-		"useTabs": true,
-		"overrides": [
-			{
-				"files": "*.md",
-				"options": {
-					"useTabs": false
-				}
-			},
-			{
-				"files": ".eslintrc",
-				"options": {
-					"parser": "json"
-				}
-			}
-		]
-	},
-	"husky": {
-		"hooks": {
-			"pre-commit": "lint-staged"
-		}
-	}
+  "name": "prom-client",
+  "version": "11.5.3",
+  "description": "Client for prometheus",
+  "main": "index.js",
+  "files": [
+    "lib/",
+    "index.js",
+    "index.d.ts"
+  ],
+  "engines": {
+    "node": ">=6.1"
+  },
+  "scripts": {
+    "benchmarks": "node ./benchmarks/index.js",
+    "test": "npm run lint && npm run compile-typescript && npm run test-unit",
+    "lint": "eslint .",
+    "test-unit": "jest",
+    "compile-typescript": "tsc --project ."
+  },
+  "repository": {
+    "type": "git",
+    "url": "git@github.com:siimon/prom-client.git"
+  },
+  "keywords": [
+    "Prometheus",
+    "Metrics",
+    "Client"
+  ],
+  "author": "Simon Nyberg",
+  "license": "Apache-2.0",
+  "homepage": "https://github.com/siimon/prom-client",
+  "devDependencies": {
+    "@clevernature/benchmark-regression": "^1.0.0",
+    "eslint": "^5.6.0",
+    "eslint-config-prettier": "^4.3.0",
+    "eslint-plugin-node": "^8.0.0",
+    "eslint-plugin-prettier": "^3.0.1",
+    "express": "^4.13.3",
+    "husky": "^1.3.1",
+    "jest": "^24.8.0",
+    "lint-staged": "^7.0.0",
+    "lolex": "^4.0.1",
+    "prettier": "1.17.1",
+    "typescript": "^3.0.3"
+  },
+  "dependencies": {
+    "tdigest": "^0.1.1"
+  },
+  "types": "./index.d.ts",
+  "jest": {
+    "testEnvironment": "node",
+    "testRegex": ".*Test\\.js$"
+  },
+  "lint-staged": {
+    "*.js": [
+      "eslint --fix",
+      "git add"
+    ],
+    "*.{ts,md,json,yml}": [
+      "prettier --write",
+      "git add"
+    ],
+    ".{eslintrc,travis.yml}": [
+      "prettier --write",
+      "git add"
+    ]
+  },
+  "prettier": {
+    "singleQuote": true,
+    "useTabs": true,
+    "overrides": [
+      {
+        "files": "*.md",
+        "options": {
+          "useTabs": false
+        }
+      },
+      {
+        "files": ".eslintrc",
+        "options": {
+          "parser": "json"
+        }
+      }
+    ]
+  },
+  "husky": {
+    "hooks": {
+      "pre-commit": "lint-staged"
+    }
+  }
 }