diff --git a/backend/build.sh b/backend/build.sh
index 84af1a919..a4d95341a 100755
--- a/backend/build.sh
+++ b/backend/build.sh
@@ -23,7 +23,7 @@ function build_service() {
     image="$1"
     echo "BUILDING $image"
     case "$image" in
-        http | db)
+        http | db | sink)
             echo build http
             docker build -t ${DOCKER_REPO:-'local'}/$image:${git_sha1} --platform linux/amd64 --build-arg SERVICE_NAME=$image -f ./cmd/Dockerfile .
             [[ $PUSH_IMAGE -eq 1 ]] && {
diff --git a/backend/services/sink/main.go b/backend/cmd/sink/main.go
similarity index 69%
rename from backend/services/sink/main.go
rename to backend/cmd/sink/main.go
index 1a23919c6..269b8fab0 100644
--- a/backend/services/sink/main.go
+++ b/backend/cmd/sink/main.go
@@ -9,37 +9,48 @@ import (
 	"os/signal"
 	"syscall"
 
-	"openreplay/backend/pkg/env"
+	"openreplay/backend/internal/assetscache"
+	"openreplay/backend/internal/config/sink"
+	"openreplay/backend/internal/oswriter"
 	. "openreplay/backend/pkg/messages"
 	"openreplay/backend/pkg/queue"
 	"openreplay/backend/pkg/queue/types"
+	"openreplay/backend/pkg/url/assets"
 )
 
 func main() {
 	log.SetFlags(log.LstdFlags | log.LUTC | log.Llongfile)
 
-	FS_DIR := env.String("FS_DIR")
-	if _, err := os.Stat(FS_DIR); os.IsNotExist(err) {
-		log.Fatalf("%v doesn't exist. %v", FS_DIR, err)
+	cfg := sink.New()
+
+	if _, err := os.Stat(cfg.FsDir); os.IsNotExist(err) {
+		log.Fatalf("%v doesn't exist. %v", cfg.FsDir, err)
 	}
 
-	writer := NewWriter(env.Uint16("FS_ULIMIT"), FS_DIR)
+	writer := oswriter.NewWriter(cfg.FsUlimit, cfg.FsDir)
+
+	producer := queue.NewProducer()
+	defer producer.Close(cfg.ProducerCloseTimeout)
+	rewriter := assets.NewRewriter(cfg.AssetsOrigin)
+	assetMessageHandler := assetscache.New(cfg, rewriter, producer)
 
 	count := 0
 
 	consumer := queue.NewMessageConsumer(
-		env.String("GROUP_SINK"),
+		cfg.GroupSink,
 		[]string{
-			env.String("TOPIC_RAW_WEB"),
-			env.String("TOPIC_RAW_IOS"),
+			cfg.TopicRawIOS,
+			cfg.TopicRawWeb,
 		},
 		func(sessionID uint64, message Message, _ *types.Meta) {
+			count++
+
 			typeID := message.TypeID()
 			if !IsReplayerType(typeID) {
 				return
 			}
 
-			count++
+			message = assetMessageHandler.ParseAssets(sessionID, message)
 
 			value := message.Encode()
 			var data []byte
diff --git a/backend/internal/assetscache/assets.go b/backend/internal/assetscache/assets.go
index 1ef70b56c..cf76bed8c 100644
--- a/backend/internal/assetscache/assets.go
+++ b/backend/internal/assetscache/assets.go
@@ -1,19 +1,19 @@
 package assetscache
 
 import (
-	"openreplay/backend/internal/config"
+	"openreplay/backend/internal/config/sink"
 	"openreplay/backend/pkg/messages"
 	"openreplay/backend/pkg/queue/types"
 	"openreplay/backend/pkg/url/assets"
 )
 
 type AssetsCache struct {
-	cfg      *config.Config
+	cfg      *sink.Config
 	rewriter *assets.Rewriter
 	producer types.Producer
 }
 
-func New(cfg *config.Config, rewriter *assets.Rewriter, producer types.Producer) *AssetsCache {
+func New(cfg *sink.Config, rewriter *assets.Rewriter, producer types.Producer) *AssetsCache {
 	return &AssetsCache{
 		cfg:      cfg,
 		rewriter: rewriter,
diff --git a/backend/internal/config/config.go b/backend/internal/config/config.go
index 5b55ba346..b98f910c2 100644
--- a/backend/internal/config/config.go
+++ b/backend/internal/config/config.go
@@ -11,12 +11,9 @@ type Config struct {
 	HTTPTimeout       time.Duration
 	TopicRawWeb       string
 	TopicRawIOS       string
-	TopicCache        string
-	CacheAssets       bool
 	BeaconSizeLimit   int64
 	JsonSizeLimit     int64
 	FileSizeLimit     int64
-	AssetsOrigin      string
 	AWSRegion         string
 	S3BucketIOSImages string
 	Postgres          string
@@ -33,12 +30,9 @@ func New() *Config {
 		HTTPTimeout:       time.Second * 60,
 		TopicRawWeb:       env.String("TOPIC_RAW_WEB"),
 		TopicRawIOS:       env.String("TOPIC_RAW_IOS"),
-		TopicCache:        env.String("TOPIC_CACHE"),
-		CacheAssets:       env.Bool("CACHE_ASSETS"),
 		BeaconSizeLimit:   int64(env.Uint64("BEACON_SIZE_LIMIT")),
 		JsonSizeLimit:     1e3, // 1Kb
 		FileSizeLimit:     1e7, // 10Mb
-		AssetsOrigin:      env.String("ASSETS_ORIGIN"),
 		AWSRegion:         env.String("AWS_REGION"),
 		S3BucketIOSImages: env.String("S3_BUCKET_IOS_IMAGES"),
 		Postgres:          env.String("POSTGRES_STRING"),
diff --git a/backend/internal/config/sink/config.go b/backend/internal/config/sink/config.go
new file mode 100644
index 000000000..a78bfba63
--- /dev/null
+++ b/backend/internal/config/sink/config.go
@@ -0,0 +1,31 @@
+package sink
+
+import (
+	"openreplay/backend/pkg/env"
+)
+
+type Config struct {
+	FsDir                string
+	FsUlimit             uint16
+	GroupSink            string
+	TopicRawWeb          string
+	TopicRawIOS          string
+	TopicCache           string
+	CacheAssets          bool
+	AssetsOrigin         string
+	ProducerCloseTimeout int
+}
+
+func New() *Config {
+	return &Config{
+		FsDir:                env.String("FS_DIR"),
+		FsUlimit:             env.Uint16("FS_ULIMIT"),
+		GroupSink:            env.String("GROUP_SINK"),
+		TopicRawWeb:          env.String("TOPIC_RAW_WEB"),
+		TopicRawIOS:          env.String("TOPIC_RAW_IOS"),
+		TopicCache:           env.String("TOPIC_CACHE"),
+		CacheAssets:          env.Bool("CACHE_ASSETS"),
+		AssetsOrigin:         env.String("ASSETS_ORIGIN"),
+		ProducerCloseTimeout: 15000,
+	}
+}
diff --git a/backend/services/sink/writer.go b/backend/internal/oswriter/oswriter.go
similarity index 99%
rename from backend/services/sink/writer.go
rename to backend/internal/oswriter/oswriter.go
index 6fcfdddbc..839e61eba 100644
--- a/backend/services/sink/writer.go
+++ b/backend/internal/oswriter/oswriter.go
@@ -1,4 +1,4 @@
-package main
+package oswriter
 
 import (
 	"math"
diff --git a/backend/internal/router/handlers-web.go b/backend/internal/router/handlers-web.go
index b73a6d534..13301d97e 100644
--- a/backend/internal/router/handlers-web.go
+++ b/backend/internal/router/handlers-web.go
@@ -1,9 +1,9 @@
 package router
 
 import (
-	"bytes"
 	"encoding/json"
 	"errors"
+	"io/ioutil"
 	"log"
 	"math/rand"
 	"net/http"
@@ -117,20 +117,15 @@ func (e *Router) pushMessagesHandlerWeb(w http.ResponseWriter, r *http.Request)
 	body := http.MaxBytesReader(w, r.Body, e.cfg.BeaconSizeLimit)
 	defer body.Close()
 
-	var handledMessages bytes.Buffer
-
-	// Process each message in request data
-	err = ReadBatchReader(body, func(msg Message) {
-		msg = e.services.Assets.ParseAssets(sessionData.ID, msg)
-		handledMessages.Write(msg.Encode())
-	})
+	bytes, err := ioutil.ReadAll(body)
 	if err != nil {
-		ResponseWithError(w, http.StatusForbidden, err)
+		ResponseWithError(w, http.StatusInternalServerError, err) // TODO: Split environments; send error here only on staging
 		return
 	}
 
 	// Send processed messages to queue as array of bytes
-	err = e.services.Producer.Produce(e.cfg.TopicRawWeb, sessionData.ID, handledMessages.Bytes())
+	// TODO: check bytes for nonsense crap
+	err = e.services.Producer.Produce(e.cfg.TopicRawWeb, sessionData.ID, bytes)
 	if err != nil {
 		log.Printf("can't send processed messages to queue: %s", err)
 	}
diff --git a/backend/internal/services/services.go b/backend/internal/services/services.go
index 5b84e1dfb..c9915c78e 100644
--- a/backend/internal/services/services.go
+++ b/backend/internal/services/services.go
@@ -1,7 +1,6 @@
 package services
 
 import (
-	"openreplay/backend/internal/assetscache"
 	"openreplay/backend/internal/config"
 	"openreplay/backend/internal/geoip"
 	"openreplay/backend/internal/uaparser"
@@ -10,13 +9,11 @@ import (
 	"openreplay/backend/pkg/queue/types"
 	"openreplay/backend/pkg/storage"
 	"openreplay/backend/pkg/token"
-	"openreplay/backend/pkg/url/assets"
 )
 
 type ServicesBuilder struct {
 	Database  *cache.PGCache
 	Producer  types.Producer
-	Assets    *assetscache.AssetsCache
 	Flaker    *flakeid.Flaker
 	UaParser  *uaparser.UAParser
 	GeoIP     *geoip.GeoIP
@@ -25,11 +22,9 @@ type ServicesBuilder struct {
 }
 
 func New(cfg *config.Config, producer types.Producer, pgconn *cache.PGCache) *ServicesBuilder {
-	rewriter := assets.NewRewriter(cfg.AssetsOrigin)
 	return &ServicesBuilder{
 		Database:  pgconn,
 		Producer:  producer,
-		Assets:    assetscache.New(cfg, rewriter, producer),
 		Storage:   storage.NewS3(cfg.AWSRegion, cfg.S3BucketIOSImages),
 		Tokenizer: token.NewTokenizer(cfg.TokenSecret),
 		UaParser:  uaparser.NewUAParser(cfg.UAParserFile),
diff --git a/backend/services/sink/build_hack b/backend/services/sink/build_hack
new file mode 100644
index 000000000..e69de29bb