diff --git a/lib/pair.js b/lib/pairing.js
similarity index 100%
rename from lib/pair.js
rename to lib/pairing.js
diff --git a/lib/plugins.js b/lib/plugins.js
index e9a6aeff..7bd5413d 100644
--- a/lib/plugins.js
+++ b/lib/plugins.js
@@ -861,8 +861,6 @@ exports.requestDispense = function requestDispense (tx) {
 }
 
 exports.fetchTx = db.fetchTx
-exports.cachedResponse = db.cachedResponse
-exports.cacheResponse = db.cacheResponse
 
 function sweepHD (row) {
   const cryptoCode = row.crypto_code
diff --git a/lib/postgresql_interface.js b/lib/postgresql_interface.js
index 1d44d0dc..da84b42a 100644
--- a/lib/postgresql_interface.js
+++ b/lib/postgresql_interface.js
@@ -7,7 +7,6 @@ const pgp = require('pg-promise')()
 
 const logger = require('./logger')
 
-const CACHED_SESSION_TTL = 60 * 60 * 1000
 const LIVE_SWEEP_TTL = 48 * 60 * 60 * 1000
 
 function isUniqueViolation (err) {
@@ -382,47 +381,6 @@ exports.updateNotify = function updateNotify (tx) {
   })
 }
 
-function insertCachedRequest (deviceId, txId, path, method, body) {
-  const fields = [
-    'device_id',
-    'tx_id',
-    'path',
-    'method',
-    'body'
-  ]
-
-  const sql = getInsertQuery('cached_responses', fields)
-  return db.none(sql, [deviceId, txId, path, method, body])
-}
-
-exports.cachedResponse = function (deviceId, txId, path, method) {
-  const sql = `select body from cached_responses
-  where device_id=$1
-  and tx_id=$2
-  and path=$3
-  and method=$4`
-
-  const values = [deviceId, txId, path, method]
-
-  return insertCachedRequest(deviceId, txId, path, method, {pendingRequest: true})
-  .then(() => ({}))
-  .catch(err => {
-    if (!isUniqueViolation(err)) throw err
-    console.log('DEBUG22: %j', err)
-    return db.one(sql, values)
-    .then(row => ({body: row.body}))
-  })
-}
-
-function pruneCachedResponses () {
-  const sql = `delete from cached_responses
-  where (EXTRACT(EPOCH FROM (now() - created))) * 1000 < $1`
-
-  const values = [CACHED_SESSION_TTL]
-
-  return db.none(sql, values)
-}
-
 exports.cacheResponse = function (deviceId, txId, path, method, body) {
   const sql = `update cached_responses
   set body=$1
@@ -479,5 +437,3 @@ exports.markSwept = function markSwept (txId) {
 
   return db.none(sql, [true, txId])
 }
-
-setInterval(pruneCachedResponses, CACHED_SESSION_TTL)
diff --git a/lib/routes.js b/lib/routes.js
index 43e503ac..a056343a 100644
--- a/lib/routes.js
+++ b/lib/routes.js
@@ -6,6 +6,7 @@ const BigNumber = require('bignumber.js')
 const logger = require('./logger')
 const configManager = require('./config-manager')
 const db = require('./db')
+const pairing = require('./pairing')
 
 let plugins
 
@@ -181,7 +182,7 @@ function verifyTx (req, res) {
 function ca (req, res) {
   const token = req.query.token
 
-  return pair.authorizeCaDownload(token)
+  return pairing.authorizeCaDownload(token)
   .then(valid => {
     if (valid) return res.json({ca: pair.ca()})
 
@@ -193,7 +194,7 @@ function pair (req, res) {
   const token = req.query.token
   const deviceId = getDeviceId(req)
 
-  return pair.pair(token, deviceId)
+  return pairing.pair(token, deviceId)
   .then(valid => {
     if (valid) return cacheAndRespond(req, res)
     throw httpError('Pairing failed')