diff --git a/server/achievements/Achievement.coffee b/server/achievements/Achievement.coffee
index 3190a3c23..f6f26bbed 100644
--- a/server/achievements/Achievement.coffee
+++ b/server/achievements/Achievement.coffee
@@ -5,6 +5,7 @@ utils = require '../../app/core/utils'
 plugins = require('../plugins/plugins')
 AchievablePlugin = require '../plugins/achievements'
 TreemaUtils = require '../../bower_components/treema/treema-utils.js'
+config = require '../../server_config'
 
 # `pre` and `post` are not called for update operations executed directly on the database,
 # including `Model.update`,`.findByIdAndUpdate`,`.findOneAndUpdate`, `.findOneAndRemove`,and `.findByIdAndRemove`.order
@@ -13,7 +14,7 @@ TreemaUtils = require '../../bower_components/treema/treema-utils.js'
 
 AchievementSchema = new mongoose.Schema({
   userField: String
-}, {strict: false,read:'nearest'})
+}, {strict: false,read: config.mongo.readpref})
 
 AchievementSchema.index(
   {
diff --git a/server/articles/Article.coffee b/server/articles/Article.coffee
index 0b69ceec0..cff703cd2 100644
--- a/server/articles/Article.coffee
+++ b/server/articles/Article.coffee
@@ -1,7 +1,8 @@
 mongoose = require 'mongoose'
 plugins = require '../plugins/plugins'
+config = require '../../server_config'
 
-ArticleSchema = new mongoose.Schema(body: String, {strict: false,read:'nearest'})
+ArticleSchema = new mongoose.Schema(body: String, {strict: false,read:config.mongo.readpref})
 
 ArticleSchema.index(
   {
diff --git a/server/campaigns/Campaign.coffee b/server/campaigns/Campaign.coffee
index b48ec0b1a..65a7ef614 100644
--- a/server/campaigns/Campaign.coffee
+++ b/server/campaigns/Campaign.coffee
@@ -1,8 +1,9 @@
 mongoose = require 'mongoose'
 plugins = require '../plugins/plugins'
 log = require 'winston'
+config = require '../../server_config'
 
-CampaignSchema = new mongoose.Schema(body: String, {strict: false,read:'nearest'})
+CampaignSchema = new mongoose.Schema(body: String, {strict: false,read:config.mongo.readpref})
 
 CampaignSchema.index({i18nCoverage: 1}, {name: 'translation coverage index', sparse: true})
 CampaignSchema.index({slug: 1}, {name: 'slug index', sparse: true, unique: true})
diff --git a/server/levels/Level.coffee b/server/levels/Level.coffee
index 29924522a..5eef1b747 100644
--- a/server/levels/Level.coffee
+++ b/server/levels/Level.coffee
@@ -1,10 +1,11 @@
 mongoose = require 'mongoose'
 plugins = require '../plugins/plugins'
 jsonschema = require '../../app/schemas/models/level'
+config = require '../../server_config'
 
 LevelSchema = new mongoose.Schema({
   description: String
-}, {strict: false, read:'nearest'})
+}, {strict: false, read:config.mongo.readpref})
 
 LevelSchema.index(
   {
diff --git a/server/levels/components/LevelComponent.coffee b/server/levels/components/LevelComponent.coffee
index 3404ca6f6..68280f661 100644
--- a/server/levels/components/LevelComponent.coffee
+++ b/server/levels/components/LevelComponent.coffee
@@ -1,11 +1,12 @@
 mongoose = require 'mongoose'
 plugins = require '../../plugins/plugins'
 jsonschema = require '../../../app/schemas/models/level_component'
+config = require '../../../server_config'
 
 LevelComponentSchema = new mongoose.Schema {
   description: String
   system: String
-}, {strict: false, read:'nearest'}
+}, {strict: false, read:config.mongo.readpref}
 
 LevelComponentSchema.index(
   {
diff --git a/server/levels/feedbacks/LevelFeedback.coffee b/server/levels/feedbacks/LevelFeedback.coffee
index e13735f6f..1e3a47950 100644
--- a/server/levels/feedbacks/LevelFeedback.coffee
+++ b/server/levels/feedbacks/LevelFeedback.coffee
@@ -3,12 +3,13 @@
 mongoose = require 'mongoose'
 plugins = require '../../plugins/plugins'
 jsonschema = require '../../../app/schemas/models/level_feedback'
+config = require '../../../server_config'
 
 LevelFeedbackSchema = new mongoose.Schema({
   created:
     type: Date
     'default': Date.now
-}, {strict: false,read:'nearest'})
+}, {strict: false,read:config.mongo.readpref})
 
 LevelFeedbackSchema.index({created: 1})
 LevelFeedbackSchema.index({creator: 1})
diff --git a/server/levels/sessions/LevelSession.coffee b/server/levels/sessions/LevelSession.coffee
index 74769ee89..abd1940a3 100644
--- a/server/levels/sessions/LevelSession.coffee
+++ b/server/levels/sessions/LevelSession.coffee
@@ -3,12 +3,13 @@ plugins = require '../../plugins/plugins'
 AchievablePlugin = require '../../plugins/achievements'
 jsonschema = require '../../../app/schemas/models/level_session'
 log = require 'winston'
+config = require '../../../server_config'
 
 LevelSessionSchema = new mongoose.Schema({
   created:
     type: Date
     'default': Date.now
-}, {strict: false,read:'nearest'})
+}, {strict: false,read:config.mongo.readpref})
 
 LevelSessionSchema.index({creator: 1})
 LevelSessionSchema.index({level: 1})
diff --git a/server/levels/systems/LevelSystem.coffee b/server/levels/systems/LevelSystem.coffee
index 5d3830f5e..75398fb4b 100644
--- a/server/levels/systems/LevelSystem.coffee
+++ b/server/levels/systems/LevelSystem.coffee
@@ -1,10 +1,11 @@
 mongoose = require 'mongoose'
 plugins = require '../../plugins/plugins'
 jsonschema = require '../../../app/schemas/models/level_system'
+config = require '../../../server_config'
 
 LevelSystemSchema = new mongoose.Schema {
   description: String
-}, {strict: false,read:'nearest'}
+}, {strict: false,read:config.mongo.readpref}
 
 LevelSystemSchema.index(
   {
diff --git a/server/levels/thangs/ThangType.coffee b/server/levels/thangs/ThangType.coffee
index 973ecfcdd..732dc5f09 100644
--- a/server/levels/thangs/ThangType.coffee
+++ b/server/levels/thangs/ThangType.coffee
@@ -1,9 +1,10 @@
 mongoose = require 'mongoose'
 plugins = require '../../plugins/plugins'
+config = require '../../../server_config'
 
 ThangTypeSchema = new mongoose.Schema({
   body: String,
-}, {strict: false,read:'nearest'})
+}, {strict: false,read:config.mongo.readpref})
 
 ThangTypeSchema.index(
   {
diff --git a/server/patches/Patch.coffee b/server/patches/Patch.coffee
index a5dd2a1a8..712d7cdb3 100644
--- a/server/patches/Patch.coffee
+++ b/server/patches/Patch.coffee
@@ -2,8 +2,9 @@ mongoose = require('mongoose')
 deltas = require '../../app/core/deltas'
 log = require 'winston'
 {handlers} = require '../commons/mapping'
+config = require '../../server_config'
 
-PatchSchema = new mongoose.Schema({status: String}, {strict: false,read:'nearest'})
+PatchSchema = new mongoose.Schema({status: String}, {strict: false,read:config.mongo.readpref})
 
 PatchSchema.pre 'save', (next) ->
   return next() unless @isNew # patch can't be altered after creation, so only need to check data once
diff --git a/server/payments/Payment.coffee b/server/payments/Payment.coffee
index e74919858..c29814ed2 100644
--- a/server/payments/Payment.coffee
+++ b/server/payments/Payment.coffee
@@ -1,6 +1,7 @@
 mongoose = require('mongoose')
+config = require '../../server_config'
 
-PaymentSchema = new mongoose.Schema({}, {strict: false, read:'nearest'})
+PaymentSchema = new mongoose.Schema({}, {strict: false, read:config.mongo.readpref})
 PaymentSchema.index({recipient: 1, 'stripe.timestamp': 1, 'ios.transactionID'}, {unique: true, name: 'unique payment'})
 
 module.exports = mongoose.model('payment', PaymentSchema)
diff --git a/server/polls/Poll.coffee b/server/polls/Poll.coffee
index f11881656..e6ad7a609 100644
--- a/server/polls/Poll.coffee
+++ b/server/polls/Poll.coffee
@@ -2,12 +2,12 @@ mongoose = require 'mongoose'
 plugins = require '../plugins/plugins'
 jsonSchema = require '../../app/schemas/models/poll.schema'
 log = require 'winston'
-
+config = require '../../server_config'
 PollSchema = new mongoose.Schema {
   created:
     type: Date
     'default': Date.now
-}, {strict: false, minimize: false,read:'nearest'}
+}, {strict: false, minimize: false,read:config.mongo.readpref}
 
 PollSchema.index {priority: 1}
 
diff --git a/server/prepaids/Prepaid.coffee b/server/prepaids/Prepaid.coffee
index 4c55fb0ea..71a870bdc 100644
--- a/server/prepaids/Prepaid.coffee
+++ b/server/prepaids/Prepaid.coffee
@@ -1,5 +1,5 @@
 mongoose = require 'mongoose'
-
-PrepaidSchema = new mongoose.Schema {}, {strict: false, minimize: false,read:'nearest'}
+config = require '../../server_config'
+PrepaidSchema = new mongoose.Schema {}, {strict: false, minimize: false,read:config.mongo.readpref}
 
 module.exports = Prepaid = mongoose.model('prepaid', PrepaidSchema)
diff --git a/server/purchases/Purchase.coffee b/server/purchases/Purchase.coffee
index 33a43c5b3..cb0c18130 100644
--- a/server/purchases/Purchase.coffee
+++ b/server/purchases/Purchase.coffee
@@ -1,6 +1,6 @@
 mongoose = require('mongoose')
-
-PurchaseSchema = new mongoose.Schema({status: String}, {strict: false,read:'nearest'})
+config = require '../../server_config'
+PurchaseSchema = new mongoose.Schema({status: String}, {strict: false,read:config.mongo.readpref})
 PurchaseSchema.index({recipient: 1, 'purchased.original': 1}, {unique: true, name: 'unique purchase'})
 
 module.exports = mongoose.model('purchase', PurchaseSchema)
diff --git a/server/user_code_problems/UserCodeProblem.coffee b/server/user_code_problems/UserCodeProblem.coffee
index dab0e8d34..e901a7705 100644
--- a/server/user_code_problems/UserCodeProblem.coffee
+++ b/server/user_code_problems/UserCodeProblem.coffee
@@ -1,10 +1,11 @@
 mongoose = require 'mongoose'
 plugins = require '../plugins/plugins'
+config = require '../../server_config'
 
 UserCodeProblemSchema = new mongoose.Schema({
   created:
     type: Date
     'default': Date.now
-}, {strict: false,read:'nearest'})
+}, {strict: false,read:config.mongo.readpref})
 
 module.exports = UserCodeProblem = mongoose.model('user.code.problem', UserCodeProblemSchema)
diff --git a/server_config.coffee b/server_config.coffee
index 48c82282e..c6825dbd6 100644
--- a/server_config.coffee
+++ b/server_config.coffee
@@ -20,6 +20,11 @@ config.mongo =
   mongoose_replica_string: process.env.COCO_MONGO_MONGOOSE_REPLICA_STRING or ''
   mongoose_tokyo_replica_string: process.env.COCO_MONGO_MONGOOSE_TOKYO_REPLICA_STRING or ''
 
+if config.tokyo
+  config.mongo.readpref = 'nearest'
+else
+  config.mongo.readpref = 'primary'
+
 config.apple =
   verifyURL: process.env.COCO_APPLE_VERIFY_URL or 'https://sandbox.itunes.apple.com/verifyReceipt'
 
diff --git a/server_setup.coffee b/server_setup.coffee
index 3c47faa54..2ef442449 100644
--- a/server_setup.coffee
+++ b/server_setup.coffee
@@ -131,7 +131,7 @@ setupTrailingSlashRemovingMiddleware = (app) ->
     next()
 
 exports.setupMiddleware = (app) ->
-  #setupChinaRedirectMiddleware app
+  setupChinaRedirectMiddleware app
   setupMiddlewareToSendOldBrowserWarningWhenPlayersViewLevelDirectly app
   setupExpressMiddleware app
   setupPassportMiddleware app