diff --git a/app.js b/app.js
index 2989ae00a..d9b7ed5e1 100644
--- a/app.js
+++ b/app.js
@@ -11,6 +11,7 @@ const {MOUNT_PATH} = require('./url');
 const {applyLocals} = require('./services/locals');
 const routes = require('./routes');
 const debug = require('debug')('talk:app');
+const {ENABLE_TRACING, APOLLO_ENGINE_KEY, PORT} = require('./config');
 
 const app = express();
 
@@ -23,6 +24,22 @@ if (process.env.NODE_ENV !== 'test') {
   app.use(morgan('dev'));
 }
 
+if (process.env.NODE_ENV === 'development' && ENABLE_TRACING && APOLLO_ENGINE_KEY) {
+  const {Engine} = require('apollo-engine');
+
+  const engine = new Engine({
+    engineConfig: {
+      apiKey: APOLLO_ENGINE_KEY
+    },
+    graphqlPort: PORT,
+    endpoint: '/api/v1/graph/ql',
+  });
+
+  engine.start();
+
+  app.use(engine.expressMiddleware());
+}
+
 // Trust the first proxy in front of us, this will enable us to trust the fact
 // that SSL was terminated correctly.
 app.set('trust proxy', 1);
diff --git a/config.js b/config.js
index 4601683c1..046b278e3 100644
--- a/config.js
+++ b/config.js
@@ -20,6 +20,9 @@ const CONFIG = {
   // WEBPACK indicates when webpack is currently building.
   WEBPACK: process.env.WEBPACK === 'TRUE',
 
+  APOLLO_ENGINE_KEY: process.env.APOLLO_ENGINE_KEY || null,
+  ENABLE_TRACING: Boolean(process.env.APOLLO_ENGINE_KEY),
+
   //------------------------------------------------------------------------------
   // JWT based configuration
   //------------------------------------------------------------------------------
diff --git a/graph/index.js b/graph/index.js
index 7495c0605..228470acb 100644
--- a/graph/index.js
+++ b/graph/index.js
@@ -1,6 +1,7 @@
 const schema = require('./schema');
 const Context = require('./context');
 const {createSubscriptionManager} = require('./subscriptions');
+const {ENABLE_TRACING} = require('../config');
 
 module.exports = {
   createGraphOptions: (req) => ({
@@ -10,7 +11,11 @@ module.exports = {
 
     // Load in the new context here, this'll create the loaders + mutators for
     // the lifespan of this request.
-    context: new Context(req)
+    context: new Context(req),
+
+    // Tracing request options, needed for Apollo Engine.
+    tracing: ENABLE_TRACING,
+    cacheControl: ENABLE_TRACING
   }),
   createSubscriptionManager
 };
diff --git a/models/comment.js b/models/comment.js
index 73aa22d0b..e95ecc38e 100644
--- a/models/comment.js
+++ b/models/comment.js
@@ -111,11 +111,13 @@ CommentSchema.index({
 // Add an index that is optimized for sorting based on the action count data.
 CommentSchema.index({
   'created_at': 1,
-  'action_counts': 1,
+  'action_counts.flag': 1,
 }, {
   background: true,
 });
 
+// TODO: Evaluate adding indexes for each reaction as well.
+
 // Add an index that is optimized for sorting based on the created_at timestamp
 // but also good at locating comments that have a specific asset id.
 CommentSchema.index({
diff --git a/models/user.js b/models/user.js
index 742c669d0..98e004a38 100644
--- a/models/user.js
+++ b/models/user.js
@@ -220,6 +220,24 @@ UserSchema.index({
   background: false
 });
 
+// This query is executed often, to count the number of flagged accounts with
+// usernames.
+UserSchema.index({
+  'action_counts.flag': 1,
+  'status.username.status': 1,
+}, {
+  background: true
+});
+
+// Sorting users by created at is the default people search.
+UserSchema.index({
+  'created_at': -1,
+}, {
+  background: true,
+});
+
+// TODO: Add indexes for searching the user collection. Needs product decision.
+
 /**
  * returns true if a commenter is staff
  */
diff --git a/package.json b/package.json
index 3e948cb32..dd6f004b5 100644
--- a/package.json
+++ b/package.json
@@ -51,6 +51,7 @@
   "dependencies": {
     "accepts": "^1.3.4",
     "apollo-client": "^1.9.1",
+    "apollo-server-express": "^1.2.0",
     "app-module-path": "^2.2.0",
     "autoprefixer": "^6.5.2",
     "babel-cli": "6.26.0",
@@ -102,7 +103,6 @@
     "graphql-docs": "0.2.0",
     "graphql-errors": "^2.1.0",
     "graphql-redis-subscriptions": "1.3.0",
-    "graphql-server-express": "^0.6.0",
     "graphql-subscriptions": "^0.4.3",
     "graphql-tag": "^1.2.3",
     "graphql-tools": "^0.10.1",
@@ -182,6 +182,7 @@
   },
   "devDependencies": {
     "@coralproject/eslint-config-talk": "^0.0.4",
+    "apollo-engine": "^0.6.0",
     "babel-jest": "^21.2.0",
     "babel-plugin-dynamic-import-node": "^1.1.0",
     "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
diff --git a/routes/index.js b/routes/index.js
index 90654adc5..1fde4b915 100644
--- a/routes/index.js
+++ b/routes/index.js
@@ -9,7 +9,7 @@ const i18n = require('../services/i18n');
 const enabled = require('debug').enabled;
 const errors = require('../errors');
 const {createGraphOptions} = require('../graph');
-const apollo = require('graphql-server-express');
+const apollo = require('apollo-server-express');
 const {DISABLE_STATIC_SERVER} = require('../config');
 const SetupService = require('../services/setup');
 const static = require('express-static-gzip');
diff --git a/yarn.lock b/yarn.lock
index cbbebd4e6..767c98f39 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -18,24 +18,11 @@
     git-url-parse "^6.0.2"
     shelljs "^0.7.0"
 
-"@types/express-serve-static-core@*":
-  version "4.0.53"
-  resolved "https://registry.yarnpkg.com/@types/express-serve-static-core/-/express-serve-static-core-4.0.53.tgz#1723a35d1447f2c55e13c8721eab3448e42f4d82"
-  dependencies:
-    "@types/node" "*"
-
-"@types/express@^4.0.35":
-  version "4.0.37"
-  resolved "https://registry.yarnpkg.com/@types/express/-/express-4.0.37.tgz#625ac3765169676e01897ca47011c26375784971"
-  dependencies:
-    "@types/express-serve-static-core" "*"
-    "@types/serve-static" "*"
-
 "@types/graphql@0.10.2":
   version "0.10.2"
   resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.10.2.tgz#d7c79acbaa17453b6681c80c34b38fcb10c4c08c"
 
-"@types/graphql@^0.8.5", "@types/graphql@^0.8.6":
+"@types/graphql@^0.8.5":
   version "0.8.6"
   resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.8.6.tgz#b34fb880493ba835b0c067024ee70130d6f9bb68"
 
@@ -43,25 +30,14 @@
   version "0.9.4"
   resolved "https://registry.yarnpkg.com/@types/graphql/-/graphql-0.9.4.tgz#cdeb6bcbef9b6c584374b81aa7f48ecf3da404fa"
 
-"@types/mime@*":
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/@types/mime/-/mime-2.0.0.tgz#5a7306e367c539b9f6543499de8dd519fac37a8b"
-
 "@types/node@*":
-  version "8.0.45"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-8.0.45.tgz#89fad82439d5624e1b5c6b42f0f5d85136dcdecc"
+  version "8.0.53"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-8.0.53.tgz#396b35af826fa66aad472c8cb7b8d5e277f4e6d8"
 
 "@types/node@^6.0.46":
   version "6.0.90"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-6.0.90.tgz#0ed74833fa1b73dcdb9409dcb1c97ec0a8b13b02"
 
-"@types/serve-static@*":
-  version "1.7.32"
-  resolved "https://registry.yarnpkg.com/@types/serve-static/-/serve-static-1.7.32.tgz#0f6732e4dab0813771dd8fc8fe14940f34728b4c"
-  dependencies:
-    "@types/express-serve-static-core" "*"
-    "@types/mime" "*"
-
 "@types/ws@^3.0.0":
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/@types/ws/-/ws-3.2.0.tgz#988ff690e6ed10068a86aa0e9f842d0a03c09e21"
@@ -233,6 +209,12 @@ anymatch@^1.3.0:
     micromatch "^2.1.5"
     normalize-path "^2.0.0"
 
+apollo-cache-control@^0.0.x:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/apollo-cache-control/-/apollo-cache-control-0.0.7.tgz#ffef56413a429a1ce204be5b78d248c4fe3b67ac"
+  dependencies:
+    graphql-extensions "^0.0.x"
+
 apollo-client@^1.4.0, apollo-client@^1.9.1:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/apollo-client/-/apollo-client-1.9.3.tgz#37000b3c801f4571b7b089739e696a158896aeab"
@@ -247,6 +229,29 @@ apollo-client@^1.4.0, apollo-client@^1.9.1:
   optionalDependencies:
     "@types/graphql" "0.10.2"
 
+apollo-engine-binary-darwin@^0.2017.11-121-g2a0310e1b:
+  version "0.2017.11-121-g2a0310e1b"
+  resolved "https://registry.yarnpkg.com/apollo-engine-binary-darwin/-/apollo-engine-binary-darwin-0.2017.11-121-g2a0310e1b.tgz#789895e1b7dbf70e64f5cc49f0e4b20d2c9640ab"
+
+apollo-engine-binary-linux@^0.2017.11-121-g2a0310e1b:
+  version "0.2017.11-121-g2a0310e1b"
+  resolved "https://registry.yarnpkg.com/apollo-engine-binary-linux/-/apollo-engine-binary-linux-0.2017.11-121-g2a0310e1b.tgz#fc18e2dbd346008335ce06b2713412896ff31108"
+
+apollo-engine-binary-windows@^0.2017.11-121-g2a0310e1b:
+  version "0.2017.11-121-g2a0310e1b"
+  resolved "https://registry.yarnpkg.com/apollo-engine-binary-windows/-/apollo-engine-binary-windows-0.2017.11-121-g2a0310e1b.tgz#681ce23b87d68adebd004b03ddf8a0185ba7acca"
+
+apollo-engine@^0.6.0:
+  version "0.6.0"
+  resolved "https://registry.yarnpkg.com/apollo-engine/-/apollo-engine-0.6.0.tgz#ed3d52f14dec60b7e4551d21d764a6081d58b344"
+  dependencies:
+    request "^2.81.0"
+    stream-json "^0.5.2"
+  optionalDependencies:
+    apollo-engine-binary-darwin "^0.2017.11-121-g2a0310e1b"
+    apollo-engine-binary-linux "^0.2017.11-121-g2a0310e1b"
+    apollo-engine-binary-windows "^0.2017.11-121-g2a0310e1b"
+
 apollo-link-core@^0.5.0:
   version "0.5.4"
   resolved "https://registry.yarnpkg.com/apollo-link-core/-/apollo-link-core-0.5.4.tgz#8efd4cd747959872a32f313f0ccfc2a76b396668"
@@ -255,6 +260,31 @@ apollo-link-core@^0.5.0:
     graphql-tag "^2.4.2"
     zen-observable-ts "^0.4.4"
 
+apollo-server-core@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/apollo-server-core/-/apollo-server-core-1.2.0.tgz#e851c47444991b6f89f88529237076b83e01e8ee"
+  dependencies:
+    apollo-cache-control "^0.0.x"
+    apollo-tracing "^0.1.0"
+    graphql-extensions "^0.0.x"
+
+apollo-server-express@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/apollo-server-express/-/apollo-server-express-1.2.0.tgz#026b12b453b8ecac6044b205b6a85fe596fb5f9e"
+  dependencies:
+    apollo-server-core "^1.2.0"
+    apollo-server-module-graphiql "^1.2.0"
+
+apollo-server-module-graphiql@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/apollo-server-module-graphiql/-/apollo-server-module-graphiql-1.2.0.tgz#899d84f3b747795dbbfc8354aa51622ef038151c"
+
+apollo-tracing@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/apollo-tracing/-/apollo-tracing-0.1.1.tgz#7a5707543fc102f81cda7ba45b98331a82a6750b"
+  dependencies:
+    graphql-extensions "^0.0.x"
+
 app-module-path@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/app-module-path/-/app-module-path-2.2.0.tgz#641aa55dfb7d6a6f0a8141c4b9c0aa50b6c24dd5"
@@ -1984,7 +2014,7 @@ core-js@^1.0.0:
   version "1.2.7"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
 
-core-js@^2.4.0, core-js@^2.5.0:
+core-js@^2.4.0, core-js@^2.5.0, core-js@^2.5.1:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.5.1.tgz#ae6874dc66937789b80754ff5428df66819ca50b"
 
@@ -3584,6 +3614,13 @@ graphql-errors@^2.1.0:
     babel-runtime "^6.6.1"
     uuid "^2.0.2"
 
+graphql-extensions@^0.0.x:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/graphql-extensions/-/graphql-extensions-0.0.5.tgz#63bc4a3fd31aab12bfadf783cbc038a9a6937cf0"
+  dependencies:
+    core-js "^2.5.1"
+    source-map-support "^0.5.0"
+
 graphql-redis-subscriptions@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/graphql-redis-subscriptions/-/graphql-redis-subscriptions-1.3.0.tgz#bbc52b0f77bf7d50945c6bf4e8b8aba5135555b4"
@@ -3593,26 +3630,6 @@ graphql-redis-subscriptions@1.3.0:
   optionalDependencies:
     ioredis "^3.1.2"
 
-graphql-server-core@^0.6.0:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/graphql-server-core/-/graphql-server-core-0.6.0.tgz#468625cba4a00f80275c065432faa481985f5a65"
-  optionalDependencies:
-    "@types/graphql" "^0.8.5"
-
-graphql-server-express@^0.6.0:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/graphql-server-express/-/graphql-server-express-0.6.0.tgz#516090b4add82e6ed2c4a70dd2d925031fdcc289"
-  dependencies:
-    graphql-server-core "^0.6.0"
-    graphql-server-module-graphiql "^0.6.0"
-  optionalDependencies:
-    "@types/express" "^4.0.35"
-    "@types/graphql" "^0.8.6"
-
-graphql-server-module-graphiql@^0.6.0:
-  version "0.6.0"
-  resolved "https://registry.yarnpkg.com/graphql-server-module-graphiql/-/graphql-server-module-graphiql-0.6.0.tgz#e37634b05f000731981e8ed13103f9a5861e5da0"
-
 graphql-subscriptions@^0.4.2, graphql-subscriptions@^0.4.3:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/graphql-subscriptions/-/graphql-subscriptions-0.4.4.tgz#39cff32d08dd3c990113864bab77154403727e9b"
@@ -6458,6 +6475,10 @@ parse5@^3.0.1:
   dependencies:
     "@types/node" "^6.0.46"
 
+parser-toolkit@>=0.0.3:
+  version "0.0.5"
+  resolved "https://registry.yarnpkg.com/parser-toolkit/-/parser-toolkit-0.0.5.tgz#ec4b61729c86318b56ea971bfba6b3c672d62c01"
+
 parseurl@~1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/parseurl/-/parseurl-1.3.2.tgz#fc289d4ed8993119460c156253262cdc8de65bf3"
@@ -7842,7 +7863,7 @@ repeating@^2.0.0:
   dependencies:
     is-finite "^1.0.0"
 
-request@2, request@^2.55.0, request@^2.74.0, request@^2.79.0:
+request@2, request@^2.55.0, request@^2.74.0, request@^2.79.0, request@^2.81.0:
   version "2.83.0"
   resolved "https://registry.yarnpkg.com/request/-/request-2.83.0.tgz#ca0b65da02ed62935887808e6f510381034e3356"
   dependencies:
@@ -8412,6 +8433,12 @@ source-map-support@^0.4.15:
   dependencies:
     source-map "^0.5.6"
 
+source-map-support@^0.5.0:
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.0.tgz#2018a7ad2bdf8faf2691e5fddab26bed5a2bacab"
+  dependencies:
+    source-map "^0.6.0"
+
 source-map@0.1.x:
   version "0.1.43"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.1.43.tgz#c24bc146ca517c1471f5dacbe2571b2b7f9e3346"
@@ -8428,7 +8455,7 @@ source-map@0.5.x, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.1, sourc
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
-source-map@^0.6.1, source-map@~0.6.1:
+source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
 
@@ -8505,6 +8532,12 @@ stream-http@^2.3.1:
     to-arraybuffer "^1.0.0"
     xtend "^4.0.0"
 
+stream-json@^0.5.2:
+  version "0.5.2"
+  resolved "https://registry.yarnpkg.com/stream-json/-/stream-json-0.5.2.tgz#f4256c0ef1a905f2ef2d473706b4b3ff827653cf"
+  dependencies:
+    parser-toolkit ">=0.0.3"
+
 strict-uri-encode@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz#279b225df1d582b1f54e65addd4352e18faa0713"