diff --git a/app/multitenant/memcache_client.go b/app/multitenant/memcache_client.go
index 9809f950c..ee8e0e07e 100644
--- a/app/multitenant/memcache_client.go
+++ b/app/multitenant/memcache_client.go
@@ -2,6 +2,7 @@ package multitenant
 
 import (
 	"bytes"
+	"compress/gzip"
 	"fmt"
 	"net"
 	"sort"
@@ -202,6 +203,13 @@ func (c *MemcacheClient) FetchReports(keys []string) (map[string]report.Report,
 	return reports, missing, nil
 }
 
+// StoreReport serializes and stores a report.
+func (c *MemcacheClient) StoreReport(key string, report *report.Report) error {
+	var buf bytes.Buffer
+	report.WriteBinary(&buf, gzip.BestCompression)
+	return c.StoreBytes(key, buf.Bytes())
+}
+
 // StoreBytes stores a report, expecting the report to be serialized already.
 func (c *MemcacheClient) StoreBytes(key string, content []byte) error {
 	return instrument.TimeRequestHistogramStatus("Put", memcacheRequestDuration, memcacheStatusCode, func() error {
diff --git a/app/multitenant/s3_client.go b/app/multitenant/s3_client.go
index 94deef5f3..6d90bda74 100644
--- a/app/multitenant/s3_client.go
+++ b/app/multitenant/s3_client.go
@@ -2,6 +2,7 @@ package multitenant
 
 import (
 	"bytes"
+	"compress/gzip"
 
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/session"
@@ -84,6 +85,13 @@ func (store *S3Store) fetchReport(key string) (*report.Report, error) {
 	return report.MakeFromBinary(resp.Body)
 }
 
+// StoreReport serializes and stores a report.
+func (store *S3Store) StoreReport(key string, report *report.Report) error {
+	var buf bytes.Buffer
+	report.WriteBinary(&buf, gzip.BestCompression)
+	return store.StoreBytes(key, buf.Bytes())
+}
+
 // StoreBytes stores a report in S3, expecting the report to be serialized
 // already.
 func (store *S3Store) StoreBytes(key string, content []byte) error {